873 lines
24 KiB
C
873 lines
24 KiB
C
/*
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* Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers
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* Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved.
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*
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* THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
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* OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
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*
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* Permission is hereby granted to use or copy this program
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* for any purpose, provided the above notices are retained on all copies.
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* Permission to modify the code and to distribute modified code is granted,
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* provided the above notices are retained, and a notice that the code was
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* modified is included with the above copyright notice.
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*/
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/* Boehm, July 31, 1995 5:02 pm PDT */
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#include <stdio.h>
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#include <signal.h>
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#define I_HIDE_POINTERS /* To make GC_call_with_alloc_lock visible */
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#include "gc_priv.h"
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#ifdef SOLARIS_THREADS
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# include <sys/syscall.h>
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#endif
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#ifdef MSWIN32
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# include <windows.h>
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#endif
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# ifdef THREADS
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# ifdef PCR
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# include "il/PCR_IL.h"
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PCR_Th_ML GC_allocate_ml;
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# else
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# ifdef SRC_M3
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/* Critical section counter is defined in the M3 runtime */
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/* That's all we use. */
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# else
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# ifdef SOLARIS_THREADS
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mutex_t GC_allocate_ml; /* Implicitly initialized. */
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# else
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# ifdef WIN32_THREADS
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GC_API CRITICAL_SECTION GC_allocate_ml;
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# else
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# if defined(IRIX_THREADS) || defined(IRIX_JDK_THREADS) \
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|| (defined(LINUX_THREADS) && defined(USE_SPIN_LOCK))
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pthread_t GC_lock_holder = NO_THREAD;
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# else
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# if defined(HPUX_THREADS) \
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|| defined(LINUX_THREADS) && !defined(USE_SPIN_LOCK)
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pthread_mutex_t GC_allocate_ml = PTHREAD_MUTEX_INITIALIZER;
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# else
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--> declare allocator lock here
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# endif
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# endif
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# endif
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# endif
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# endif
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# endif
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# endif
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#ifdef ECOS
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#undef STACKBASE
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#endif
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GC_FAR struct _GC_arrays GC_arrays /* = { 0 } */;
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GC_bool GC_debugging_started = FALSE;
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/* defined here so we don't have to load debug_malloc.o */
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void (*GC_check_heap)() = (void (*)())0;
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void (*GC_start_call_back)() = (void (*)())0;
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ptr_t GC_stackbottom = 0;
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GC_bool GC_dont_gc = 0;
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GC_bool GC_quiet = 0;
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#ifdef FIND_LEAK
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int GC_find_leak = 1;
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#else
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int GC_find_leak = 0;
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#endif
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/*ARGSUSED*/
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GC_PTR GC_default_oom_fn GC_PROTO((size_t bytes_requested))
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{
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return(0);
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}
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GC_PTR (*GC_oom_fn) GC_PROTO((size_t bytes_requested)) = GC_default_oom_fn;
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extern signed_word GC_mem_found;
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# ifdef MERGE_SIZES
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/* Set things up so that GC_size_map[i] >= words(i), */
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/* but not too much bigger */
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/* and so that size_map contains relatively few distinct entries */
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/* This is stolen from Russ Atkinson's Cedar quantization */
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/* alogrithm (but we precompute it). */
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void GC_init_size_map()
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{
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register unsigned i;
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/* Map size 0 to something bigger. */
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/* This avoids problems at lower levels. */
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/* One word objects don't have to be 2 word aligned. */
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for (i = 0; i < sizeof(word); i++) {
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GC_size_map[i] = MIN_WORDS;
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}
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# if MIN_WORDS > 1
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GC_size_map[sizeof(word)] = MIN_WORDS;
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# else
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GC_size_map[sizeof(word)] = ROUNDED_UP_WORDS(sizeof(word));
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# endif
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for (i = sizeof(word) + 1; i <= 8 * sizeof(word); i++) {
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# ifdef ALIGN_DOUBLE
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GC_size_map[i] = (ROUNDED_UP_WORDS(i) + 1) & (~1);
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# else
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GC_size_map[i] = ROUNDED_UP_WORDS(i);
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# endif
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}
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for (i = 8*sizeof(word) + 1; i <= 16 * sizeof(word); i++) {
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GC_size_map[i] = (ROUNDED_UP_WORDS(i) + 1) & (~1);
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}
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# ifdef GC_GCJ_SUPPORT
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/* Make all sizes up to 32 words predictable, so that a */
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/* compiler can statically perform the same computation, */
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/* or at least a computation that results in similar size */
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/* classes. */
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for (i = 16*sizeof(word) + 1; i <= 32 * sizeof(word); i++) {
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GC_size_map[i] = (ROUNDED_UP_WORDS(i) + 3) & (~3);
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}
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# endif
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/* We leave the rest of the array to be filled in on demand. */
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}
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/* Fill in additional entries in GC_size_map, including the ith one */
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/* We assume the ith entry is currently 0. */
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/* Note that a filled in section of the array ending at n always */
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/* has length at least n/4. */
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void GC_extend_size_map(i)
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word i;
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{
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word orig_word_sz = ROUNDED_UP_WORDS(i);
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word word_sz = orig_word_sz;
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register word byte_sz = WORDS_TO_BYTES(word_sz);
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/* The size we try to preserve. */
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/* Close to to i, unless this would */
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/* introduce too many distinct sizes. */
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word smaller_than_i = byte_sz - (byte_sz >> 3);
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word much_smaller_than_i = byte_sz - (byte_sz >> 2);
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register word low_limit; /* The lowest indexed entry we */
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/* initialize. */
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register word j;
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if (GC_size_map[smaller_than_i] == 0) {
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low_limit = much_smaller_than_i;
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while (GC_size_map[low_limit] != 0) low_limit++;
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} else {
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low_limit = smaller_than_i + 1;
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while (GC_size_map[low_limit] != 0) low_limit++;
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word_sz = ROUNDED_UP_WORDS(low_limit);
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word_sz += word_sz >> 3;
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if (word_sz < orig_word_sz) word_sz = orig_word_sz;
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}
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# ifdef ALIGN_DOUBLE
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word_sz += 1;
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word_sz &= ~1;
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# endif
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if (word_sz > MAXOBJSZ) {
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word_sz = MAXOBJSZ;
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}
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/* If we can fit the same number of larger objects in a block, */
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/* do so. */
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{
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size_t number_of_objs = BODY_SZ/word_sz;
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word_sz = BODY_SZ/number_of_objs;
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# ifdef ALIGN_DOUBLE
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word_sz &= ~1;
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# endif
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}
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byte_sz = WORDS_TO_BYTES(word_sz);
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# ifdef ADD_BYTE_AT_END
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/* We need one extra byte; don't fill in GC_size_map[byte_sz] */
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byte_sz--;
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# endif
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for (j = low_limit; j <= byte_sz; j++) GC_size_map[j] = word_sz;
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}
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# endif
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/*
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* The following is a gross hack to deal with a problem that can occur
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* on machines that are sloppy about stack frame sizes, notably SPARC.
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* Bogus pointers may be written to the stack and not cleared for
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* a LONG time, because they always fall into holes in stack frames
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* that are not written. We partially address this by clearing
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* sections of the stack whenever we get control.
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*/
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word GC_stack_last_cleared = 0; /* GC_no when we last did this */
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# ifdef THREADS
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# define BIG_CLEAR_SIZE 2048 /* Clear this much now and then. */
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# define SMALL_CLEAR_SIZE 256 /* Clear this much every time. */
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# endif
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# define CLEAR_SIZE 213 /* Granularity for GC_clear_stack_inner */
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# define DEGRADE_RATE 50
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word GC_min_sp; /* Coolest stack pointer value from which we've */
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/* already cleared the stack. */
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# ifdef STACK_GROWS_DOWN
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# define COOLER_THAN >
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# define HOTTER_THAN <
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# define MAKE_COOLER(x,y) if ((word)(x)+(y) > (word)(x)) {(x) += (y);} \
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else {(x) = (word)ONES;}
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# define MAKE_HOTTER(x,y) (x) -= (y)
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# else
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# define COOLER_THAN <
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# define HOTTER_THAN >
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# define MAKE_COOLER(x,y) if ((word)(x)-(y) < (word)(x)) {(x) -= (y);} else {(x) = 0;}
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# define MAKE_HOTTER(x,y) (x) += (y)
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# endif
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word GC_high_water;
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/* "hottest" stack pointer value we have seen */
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/* recently. Degrades over time. */
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word GC_words_allocd_at_reset;
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#if defined(ASM_CLEAR_CODE) && !defined(THREADS)
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extern ptr_t GC_clear_stack_inner();
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#endif
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#if !defined(ASM_CLEAR_CODE) && !defined(THREADS)
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/* Clear the stack up to about limit. Return arg. */
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/*ARGSUSED*/
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ptr_t GC_clear_stack_inner(arg, limit)
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ptr_t arg;
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word limit;
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{
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word dummy[CLEAR_SIZE];
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BZERO(dummy, CLEAR_SIZE*sizeof(word));
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if ((word)(dummy) COOLER_THAN limit) {
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(void) GC_clear_stack_inner(arg, limit);
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}
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/* Make sure the recursive call is not a tail call, and the bzero */
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/* call is not recognized as dead code. */
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GC_noop1((word)dummy);
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return(arg);
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}
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#endif
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/* Clear some of the inaccessible part of the stack. Returns its */
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/* argument, so it can be used in a tail call position, hence clearing */
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/* another frame. */
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ptr_t GC_clear_stack(arg)
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ptr_t arg;
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{
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register word sp = (word)GC_approx_sp(); /* Hotter than actual sp */
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# ifdef THREADS
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word dummy[SMALL_CLEAR_SIZE];
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unsigned random_no = 0; /* Should be more random than it is ... */
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/* Used to occasionally clear a bigger */
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/* chunk. */
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# endif
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register word limit;
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# define SLOP 400
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/* Extra bytes we clear every time. This clears our own */
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/* activation record, and should cause more frequent */
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/* clearing near the cold end of the stack, a good thing. */
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# define GC_SLOP 4000
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/* We make GC_high_water this much hotter than we really saw */
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/* saw it, to cover for GC noise etc. above our current frame. */
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# define CLEAR_THRESHOLD 100000
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/* We restart the clearing process after this many bytes of */
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/* allocation. Otherwise very heavily recursive programs */
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/* with sparse stacks may result in heaps that grow almost */
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/* without bounds. As the heap gets larger, collection */
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/* frequency decreases, thus clearing frequency would decrease, */
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/* thus more junk remains accessible, thus the heap gets */
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/* larger ... */
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# ifdef THREADS
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if (++random_no % 13 == 0) {
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limit = sp;
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MAKE_HOTTER(limit, BIG_CLEAR_SIZE*sizeof(word));
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return GC_lear_stack_inner(arg, limit);
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} else {
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BZERO(dummy, SMALL_CLEAR_SIZE*sizeof(word));
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return arg;
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}
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# else
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if (GC_gc_no > GC_stack_last_cleared) {
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/* Start things over, so we clear the entire stack again */
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if (GC_stack_last_cleared == 0) GC_high_water = (word) GC_stackbottom;
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GC_min_sp = GC_high_water;
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GC_stack_last_cleared = GC_gc_no;
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GC_words_allocd_at_reset = GC_words_allocd;
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}
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/* Adjust GC_high_water */
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MAKE_COOLER(GC_high_water, WORDS_TO_BYTES(DEGRADE_RATE) + GC_SLOP);
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if (sp HOTTER_THAN GC_high_water) {
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GC_high_water = sp;
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}
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MAKE_HOTTER(GC_high_water, GC_SLOP);
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limit = GC_min_sp;
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MAKE_HOTTER(limit, SLOP);
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if (sp COOLER_THAN limit) {
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limit &= ~0xf; /* Make it sufficiently aligned for assembly */
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/* implementations of GC_clear_stack_inner. */
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GC_min_sp = sp;
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return(GC_clear_stack_inner(arg, limit));
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} else if (WORDS_TO_BYTES(GC_words_allocd - GC_words_allocd_at_reset)
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> CLEAR_THRESHOLD) {
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/* Restart clearing process, but limit how much clearing we do. */
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GC_min_sp = sp;
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MAKE_HOTTER(GC_min_sp, CLEAR_THRESHOLD/4);
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if (GC_min_sp HOTTER_THAN GC_high_water) GC_min_sp = GC_high_water;
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GC_words_allocd_at_reset = GC_words_allocd;
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}
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# endif
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return(arg);
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}
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/* Return a pointer to the base address of p, given a pointer to a */
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/* an address within an object. Return 0 o.w. */
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# ifdef __STDC__
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GC_PTR GC_base(GC_PTR p)
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# else
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GC_PTR GC_base(p)
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GC_PTR p;
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# endif
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{
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register word r;
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register struct hblk *h;
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register bottom_index *bi;
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register hdr *candidate_hdr;
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register word limit;
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r = (word)p;
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if (!GC_is_initialized) return 0;
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h = HBLKPTR(r);
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GET_BI(r, bi);
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candidate_hdr = HDR_FROM_BI(bi, r);
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if (candidate_hdr == 0) return(0);
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/* If it's a pointer to the middle of a large object, move it */
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/* to the beginning. */
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while (IS_FORWARDING_ADDR_OR_NIL(candidate_hdr)) {
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h = FORWARDED_ADDR(h,candidate_hdr);
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r = (word)h + HDR_BYTES;
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candidate_hdr = HDR(h);
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}
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if (candidate_hdr -> hb_map == GC_invalid_map) return(0);
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/* Make sure r points to the beginning of the object */
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r &= ~(WORDS_TO_BYTES(1) - 1);
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{
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register int offset = (char *)r - (char *)(HBLKPTR(r));
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register signed_word sz = candidate_hdr -> hb_sz;
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# ifdef ALL_INTERIOR_POINTERS
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register map_entry_type map_entry;
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map_entry = MAP_ENTRY((candidate_hdr -> hb_map), offset);
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if (map_entry == OBJ_INVALID) {
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return(0);
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}
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r -= WORDS_TO_BYTES(map_entry);
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limit = r + WORDS_TO_BYTES(sz);
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# else
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register int correction;
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offset = BYTES_TO_WORDS(offset - HDR_BYTES);
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correction = offset % sz;
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r -= (WORDS_TO_BYTES(correction));
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limit = r + WORDS_TO_BYTES(sz);
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if (limit > (word)(h + 1)
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&& sz <= BYTES_TO_WORDS(HBLKSIZE) - HDR_WORDS) {
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return(0);
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}
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# endif
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if ((word)p >= limit) return(0);
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}
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return((GC_PTR)r);
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}
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/* Return the size of an object, given a pointer to its base. */
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/* (For small obects this also happens to work from interior pointers, */
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/* but that shouldn't be relied upon.) */
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# ifdef __STDC__
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size_t GC_size(GC_PTR p)
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# else
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size_t GC_size(p)
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GC_PTR p;
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# endif
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{
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register int sz;
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register hdr * hhdr = HDR(p);
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sz = WORDS_TO_BYTES(hhdr -> hb_sz);
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if (sz < 0) {
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return(-sz);
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} else {
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return(sz);
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}
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}
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size_t GC_get_heap_size GC_PROTO(())
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{
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return ((size_t) GC_heapsize);
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}
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size_t GC_get_free_bytes GC_PROTO(())
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{
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return ((size_t) GC_large_free_bytes);
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}
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size_t GC_get_bytes_since_gc GC_PROTO(())
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{
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return ((size_t) WORDS_TO_BYTES(GC_words_allocd));
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}
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GC_bool GC_is_initialized = FALSE;
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void GC_init()
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{
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DCL_LOCK_STATE;
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DISABLE_SIGNALS();
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LOCK();
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GC_init_inner();
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UNLOCK();
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ENABLE_SIGNALS();
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}
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#ifdef MSWIN32
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extern void GC_init_win32();
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#endif
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extern void GC_setpagesize();
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void GC_init_inner()
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{
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# ifndef THREADS
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word dummy;
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# endif
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if (GC_is_initialized) return;
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GC_setpagesize();
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GC_exclude_static_roots(beginGC_arrays, end_gc_area);
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# ifdef PRINTSTATS
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if ((ptr_t)endGC_arrays != (ptr_t)(&GC_obj_kinds)) {
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GC_printf0("Reordering linker, didn't exclude obj_kinds\n");
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}
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# endif
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# ifdef MSWIN32
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GC_init_win32();
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# endif
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# if defined(SEARCH_FOR_DATA_START)
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/* This doesn't really work if the collector is in a shared library. */
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GC_init_linux_data_start();
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# endif
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# ifdef SOLARIS_THREADS
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GC_thr_init();
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/* We need dirty bits in order to find live stack sections. */
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GC_dirty_init();
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# endif
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# if defined(IRIX_THREADS) || defined(LINUX_THREADS) \
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|| defined(IRIX_JDK_THREADS) || defined(HPUX_THREADS)
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GC_thr_init();
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# endif
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# if !defined(THREADS) || defined(SOLARIS_THREADS) || defined(WIN32_THREADS) \
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|| defined(IRIX_THREADS) || defined(LINUX_THREADS) \
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|| defined(HPUX_THREADS)
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if (GC_stackbottom == 0) {
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GC_stackbottom = GC_get_stack_base();
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}
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# endif
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if (sizeof (ptr_t) != sizeof(word)) {
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ABORT("sizeof (ptr_t) != sizeof(word)\n");
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}
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if (sizeof (signed_word) != sizeof(word)) {
|
|
ABORT("sizeof (signed_word) != sizeof(word)\n");
|
|
}
|
|
if (sizeof (struct hblk) != HBLKSIZE) {
|
|
ABORT("sizeof (struct hblk) != HBLKSIZE\n");
|
|
}
|
|
# ifndef THREADS
|
|
# if defined(STACK_GROWS_UP) && defined(STACK_GROWS_DOWN)
|
|
ABORT(
|
|
"Only one of STACK_GROWS_UP and STACK_GROWS_DOWN should be defd\n");
|
|
# endif
|
|
# if !defined(STACK_GROWS_UP) && !defined(STACK_GROWS_DOWN)
|
|
ABORT(
|
|
"One of STACK_GROWS_UP and STACK_GROWS_DOWN should be defd\n");
|
|
# endif
|
|
# ifdef STACK_GROWS_DOWN
|
|
if ((word)(&dummy) > (word)GC_stackbottom) {
|
|
GC_err_printf0(
|
|
"STACK_GROWS_DOWN is defd, but stack appears to grow up\n");
|
|
# ifndef UTS4 /* Compiler bug workaround */
|
|
GC_err_printf2("sp = 0x%lx, GC_stackbottom = 0x%lx\n",
|
|
(unsigned long) (&dummy),
|
|
(unsigned long) GC_stackbottom);
|
|
# endif
|
|
ABORT("stack direction 3\n");
|
|
}
|
|
# else
|
|
if ((word)(&dummy) < (word)GC_stackbottom) {
|
|
GC_err_printf0(
|
|
"STACK_GROWS_UP is defd, but stack appears to grow down\n");
|
|
GC_err_printf2("sp = 0x%lx, GC_stackbottom = 0x%lx\n",
|
|
(unsigned long) (&dummy),
|
|
(unsigned long) GC_stackbottom);
|
|
ABORT("stack direction 4");
|
|
}
|
|
# endif
|
|
# endif
|
|
# if !defined(_AUX_SOURCE) || defined(__GNUC__)
|
|
if ((word)(-1) < (word)0) {
|
|
GC_err_printf0("The type word should be an unsigned integer type\n");
|
|
GC_err_printf0("It appears to be signed\n");
|
|
ABORT("word");
|
|
}
|
|
# endif
|
|
if ((signed_word)(-1) >= (signed_word)0) {
|
|
GC_err_printf0(
|
|
"The type signed_word should be a signed integer type\n");
|
|
GC_err_printf0("It appears to be unsigned\n");
|
|
ABORT("signed_word");
|
|
}
|
|
|
|
/* Add initial guess of root sets. Do this first, since sbrk(0) */
|
|
/* might be used. */
|
|
GC_register_data_segments();
|
|
GC_init_headers();
|
|
GC_bl_init();
|
|
GC_mark_init();
|
|
if (!GC_expand_hp_inner((word)MINHINCR)) {
|
|
GC_err_printf0("Can't start up: not enough memory\n");
|
|
EXIT();
|
|
}
|
|
/* Preallocate large object map. It's otherwise inconvenient to */
|
|
/* deal with failure. */
|
|
if (!GC_add_map_entry((word)0)) {
|
|
GC_err_printf0("Can't start up: not enough memory\n");
|
|
EXIT();
|
|
}
|
|
GC_register_displacement_inner(0L);
|
|
# ifdef MERGE_SIZES
|
|
GC_init_size_map();
|
|
# endif
|
|
# ifdef PCR
|
|
if (PCR_IL_Lock(PCR_Bool_false, PCR_allSigsBlocked, PCR_waitForever)
|
|
!= PCR_ERes_okay) {
|
|
ABORT("Can't lock load state\n");
|
|
} else if (PCR_IL_Unlock() != PCR_ERes_okay) {
|
|
ABORT("Can't unlock load state\n");
|
|
}
|
|
PCR_IL_Unlock();
|
|
GC_pcr_install();
|
|
# endif
|
|
/* Get black list set up */
|
|
GC_gcollect_inner();
|
|
# ifdef STUBBORN_ALLOC
|
|
GC_stubborn_init();
|
|
# endif
|
|
GC_is_initialized = TRUE;
|
|
/* Convince lint that some things are used */
|
|
# ifdef LINT
|
|
{
|
|
extern char * GC_copyright[];
|
|
extern int GC_read();
|
|
extern void GC_register_finalizer_no_order();
|
|
|
|
GC_noop(GC_copyright, GC_find_header,
|
|
GC_push_one, GC_call_with_alloc_lock, GC_read,
|
|
GC_dont_expand,
|
|
# ifndef NO_DEBUGGING
|
|
GC_dump,
|
|
# endif
|
|
GC_register_finalizer_no_order);
|
|
}
|
|
# endif
|
|
}
|
|
|
|
void GC_enable_incremental GC_PROTO(())
|
|
{
|
|
# if !defined(SMALL_CONFIG)
|
|
if (!GC_find_leak) {
|
|
DCL_LOCK_STATE;
|
|
|
|
DISABLE_SIGNALS();
|
|
LOCK();
|
|
if (GC_incremental) goto out;
|
|
GC_setpagesize();
|
|
# ifdef MSWIN32
|
|
{
|
|
extern GC_bool GC_is_win32s();
|
|
|
|
/* VirtualProtect is not functional under win32s. */
|
|
if (GC_is_win32s()) goto out;
|
|
}
|
|
# endif /* MSWIN32 */
|
|
# ifndef SOLARIS_THREADS
|
|
GC_dirty_init();
|
|
# endif
|
|
if (!GC_is_initialized) {
|
|
GC_init_inner();
|
|
}
|
|
if (GC_dont_gc) {
|
|
/* Can't easily do it. */
|
|
UNLOCK();
|
|
ENABLE_SIGNALS();
|
|
return;
|
|
}
|
|
if (GC_words_allocd > 0) {
|
|
/* There may be unmarked reachable objects */
|
|
GC_gcollect_inner();
|
|
} /* else we're OK in assuming everything's */
|
|
/* clean since nothing can point to an */
|
|
/* unmarked object. */
|
|
GC_read_dirty();
|
|
GC_incremental = TRUE;
|
|
out:
|
|
UNLOCK();
|
|
ENABLE_SIGNALS();
|
|
}
|
|
# endif
|
|
}
|
|
|
|
|
|
#ifdef MSWIN32
|
|
# define LOG_FILE "gc.log"
|
|
|
|
HANDLE GC_stdout = 0, GC_stderr;
|
|
int GC_tmp;
|
|
DWORD GC_junk;
|
|
|
|
void GC_set_files()
|
|
{
|
|
if (!GC_stdout) {
|
|
GC_stdout = CreateFile(LOG_FILE, GENERIC_WRITE,
|
|
FILE_SHARE_READ | FILE_SHARE_WRITE,
|
|
NULL, CREATE_ALWAYS, FILE_FLAG_WRITE_THROUGH,
|
|
NULL);
|
|
if (INVALID_HANDLE_VALUE == GC_stdout) ABORT("Open of log file failed");
|
|
}
|
|
if (GC_stderr == 0) {
|
|
GC_stderr = GC_stdout;
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
#if defined(OS2) || defined(MACOS)
|
|
FILE * GC_stdout = NULL;
|
|
FILE * GC_stderr = NULL;
|
|
int GC_tmp; /* Should really be local ... */
|
|
|
|
void GC_set_files()
|
|
{
|
|
if (GC_stdout == NULL) {
|
|
GC_stdout = stdout;
|
|
}
|
|
if (GC_stderr == NULL) {
|
|
GC_stderr = stderr;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#if !defined(OS2) && !defined(MACOS) && !defined(MSWIN32)
|
|
int GC_stdout = 1;
|
|
int GC_stderr = 2;
|
|
# if !defined(AMIGA)
|
|
# include <unistd.h>
|
|
# endif
|
|
#endif
|
|
|
|
#if !defined(MSWIN32) && !defined(OS2) && !defined(MACOS) && !defined(ECOS)
|
|
int GC_write(fd, buf, len)
|
|
int fd;
|
|
char *buf;
|
|
size_t len;
|
|
{
|
|
register int bytes_written = 0;
|
|
register int result;
|
|
|
|
while (bytes_written < len) {
|
|
# ifdef SOLARIS_THREADS
|
|
result = syscall(SYS_write, fd, buf + bytes_written,
|
|
len - bytes_written);
|
|
# else
|
|
result = write(fd, buf + bytes_written, len - bytes_written);
|
|
# endif
|
|
if (-1 == result) return(result);
|
|
bytes_written += result;
|
|
}
|
|
return(bytes_written);
|
|
}
|
|
#endif /* UN*X */
|
|
|
|
#if defined(ECOS)
|
|
int GC_write(fd, buf, len)
|
|
{
|
|
_Jv_diag_write (buf, len);
|
|
return len;
|
|
}
|
|
#endif
|
|
|
|
|
|
#ifdef MSWIN32
|
|
# define WRITE(f, buf, len) (GC_set_files(), \
|
|
GC_tmp = WriteFile((f), (buf), \
|
|
(len), &GC_junk, NULL),\
|
|
(GC_tmp? 1 : -1))
|
|
#else
|
|
# if defined(OS2) || defined(MACOS)
|
|
# define WRITE(f, buf, len) (GC_set_files(), \
|
|
GC_tmp = fwrite((buf), 1, (len), (f)), \
|
|
fflush(f), GC_tmp)
|
|
# else
|
|
# define WRITE(f, buf, len) GC_write((f), (buf), (len))
|
|
# endif
|
|
#endif
|
|
|
|
/* A version of printf that is unlikely to call malloc, and is thus safer */
|
|
/* to call from the collector in case malloc has been bound to GC_malloc. */
|
|
/* Assumes that no more than 1023 characters are written at once. */
|
|
/* Assumes that all arguments have been converted to something of the */
|
|
/* same size as long, and that the format conversions expect something */
|
|
/* of that size. */
|
|
void GC_printf(format, a, b, c, d, e, f)
|
|
char * format;
|
|
long a, b, c, d, e, f;
|
|
{
|
|
char buf[1025];
|
|
|
|
if (GC_quiet) return;
|
|
buf[1024] = 0x15;
|
|
(void) sprintf(buf, format, a, b, c, d, e, f);
|
|
if (buf[1024] != 0x15) ABORT("GC_printf clobbered stack");
|
|
if (WRITE(GC_stdout, buf, strlen(buf)) < 0) ABORT("write to stdout failed");
|
|
}
|
|
|
|
void GC_err_printf(format, a, b, c, d, e, f)
|
|
char * format;
|
|
long a, b, c, d, e, f;
|
|
{
|
|
char buf[1025];
|
|
|
|
buf[1024] = 0x15;
|
|
(void) sprintf(buf, format, a, b, c, d, e, f);
|
|
if (buf[1024] != 0x15) ABORT("GC_err_printf clobbered stack");
|
|
if (WRITE(GC_stderr, buf, strlen(buf)) < 0) ABORT("write to stderr failed");
|
|
}
|
|
|
|
void GC_err_puts(s)
|
|
char *s;
|
|
{
|
|
if (WRITE(GC_stderr, s, strlen(s)) < 0) ABORT("write to stderr failed");
|
|
}
|
|
|
|
# if defined(__STDC__) || defined(__cplusplus)
|
|
void GC_default_warn_proc(char *msg, GC_word arg)
|
|
# else
|
|
void GC_default_warn_proc(msg, arg)
|
|
char *msg;
|
|
GC_word arg;
|
|
# endif
|
|
{
|
|
GC_err_printf1(msg, (unsigned long)arg);
|
|
}
|
|
|
|
GC_warn_proc GC_current_warn_proc = GC_default_warn_proc;
|
|
|
|
# if defined(__STDC__) || defined(__cplusplus)
|
|
GC_warn_proc GC_set_warn_proc(GC_warn_proc p)
|
|
# else
|
|
GC_warn_proc GC_set_warn_proc(p)
|
|
GC_warn_proc p;
|
|
# endif
|
|
{
|
|
GC_warn_proc result;
|
|
|
|
LOCK();
|
|
result = GC_current_warn_proc;
|
|
GC_current_warn_proc = p;
|
|
UNLOCK();
|
|
return(result);
|
|
}
|
|
|
|
|
|
#ifndef PCR
|
|
void GC_abort(msg)
|
|
char * msg;
|
|
{
|
|
GC_err_printf1("%s\n", msg);
|
|
(void) abort();
|
|
}
|
|
#endif
|
|
|
|
#ifdef NEED_CALLINFO
|
|
|
|
void GC_print_callers (info)
|
|
struct callinfo info[NFRAMES];
|
|
{
|
|
register int i;
|
|
|
|
# if NFRAMES == 1
|
|
GC_err_printf0("\tCaller at allocation:\n");
|
|
# else
|
|
GC_err_printf0("\tCall chain at allocation:\n");
|
|
# endif
|
|
for (i = 0; i < NFRAMES; i++) {
|
|
if (info[i].ci_pc == 0) break;
|
|
# if NARGS > 0
|
|
{
|
|
int j;
|
|
|
|
GC_err_printf0("\t\targs: ");
|
|
for (j = 0; j < NARGS; j++) {
|
|
if (j != 0) GC_err_printf0(", ");
|
|
GC_err_printf2("%d (0x%X)", ~(info[i].ci_arg[j]),
|
|
~(info[i].ci_arg[j]));
|
|
}
|
|
GC_err_printf0("\n");
|
|
}
|
|
# endif
|
|
GC_err_printf1("\t\t##PC##= 0x%X\n", info[i].ci_pc);
|
|
}
|
|
}
|
|
|
|
#endif /* SAVE_CALL_CHAIN */
|
|
|
|
/* Needed by SRC_M3, gcj, and should perhaps be the official interface */
|
|
/* to GC_dont_gc. */
|
|
void GC_enable()
|
|
{
|
|
GC_dont_gc--;
|
|
}
|
|
|
|
void GC_disable()
|
|
{
|
|
GC_dont_gc++;
|
|
}
|
|
|
|
#if !defined(NO_DEBUGGING)
|
|
|
|
void GC_dump()
|
|
{
|
|
GC_printf0("***Static roots:\n");
|
|
GC_print_static_roots();
|
|
GC_printf0("\n***Heap sections:\n");
|
|
GC_print_heap_sects();
|
|
GC_printf0("\n***Free blocks:\n");
|
|
GC_print_hblkfreelist();
|
|
GC_printf0("\n***Blocks in use:\n");
|
|
GC_print_block_list();
|
|
}
|
|
|
|
# endif /* NO_DEBUGGING */
|