94f56408db
Change the compiler handle append as the gc compiler does: call a function to grow the slice, but otherwise assign the new elements directly to the final slice. For the current gccgo memory allocator the slice code has to call runtime_newarray, not mallocgc directly, so that the allocator sets the TypeInfo_Array bit in the type pointer. Rename the static function cnew to runtime_docnew, so that the stack trace ignores it when ignoring runtime functions. This was needed to fix the runtime/pprof tests on 386. Reviewed-on: https://go-review.googlesource.com/32218 From-SVN: r241667
587 lines
17 KiB
C
587 lines
17 KiB
C
// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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#include "config.h"
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#include "go-assert.h"
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#include <complex.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <pthread.h>
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#include <semaphore.h>
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#include <ucontext.h>
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#ifdef HAVE_SYS_MMAN_H
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#include <sys/mman.h>
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#endif
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#include "go-alloc.h"
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#define _STRINGIFY2_(x) #x
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#define _STRINGIFY_(x) _STRINGIFY2_(x)
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#define GOSYM_PREFIX _STRINGIFY_(__USER_LABEL_PREFIX__)
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/* This file supports C files copied from the 6g runtime library.
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This is a version of the 6g runtime.h rewritten for gccgo's version
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of the code. */
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typedef signed int int8 __attribute__ ((mode (QI)));
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typedef unsigned int uint8 __attribute__ ((mode (QI)));
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typedef signed int int16 __attribute__ ((mode (HI)));
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typedef unsigned int uint16 __attribute__ ((mode (HI)));
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typedef signed int int32 __attribute__ ((mode (SI)));
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typedef unsigned int uint32 __attribute__ ((mode (SI)));
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typedef signed int int64 __attribute__ ((mode (DI)));
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typedef unsigned int uint64 __attribute__ ((mode (DI)));
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typedef float float32 __attribute__ ((mode (SF)));
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typedef double float64 __attribute__ ((mode (DF)));
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typedef signed int intptr __attribute__ ((mode (pointer)));
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typedef unsigned int uintptr __attribute__ ((mode (pointer)));
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typedef intptr intgo; // Go's int
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typedef uintptr uintgo; // Go's uint
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typedef uintptr uintreg;
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/* Defined types. */
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typedef uint8 bool;
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typedef uint8 byte;
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typedef struct g G;
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typedef struct mutex Lock;
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typedef struct m M;
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typedef struct p P;
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typedef struct note Note;
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typedef struct String String;
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typedef struct FuncVal FuncVal;
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typedef struct SigTab SigTab;
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typedef struct mcache MCache;
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typedef struct FixAlloc FixAlloc;
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typedef struct hchan Hchan;
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typedef struct timer Timer;
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typedef struct gcstats GCStats;
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typedef struct lfnode LFNode;
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typedef struct ParFor ParFor;
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typedef struct ParForThread ParForThread;
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typedef struct cgoMal CgoMal;
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typedef struct PollDesc PollDesc;
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typedef struct sudog SudoG;
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typedef struct __go_open_array Slice;
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typedef struct iface Iface;
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typedef struct eface Eface;
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typedef struct __go_type_descriptor Type;
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typedef struct _defer Defer;
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typedef struct _panic Panic;
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typedef struct __go_ptr_type PtrType;
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typedef struct __go_func_type FuncType;
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typedef struct __go_interface_type InterfaceType;
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typedef struct __go_map_type MapType;
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typedef struct __go_channel_type ChanType;
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typedef struct tracebackg Traceback;
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typedef struct location Location;
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struct String
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{
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const byte* str;
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intgo len;
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};
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struct FuncVal
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{
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void (*fn)(void);
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// variable-size, fn-specific data here
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};
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#include "array.h"
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// Rename Go types generated by mkrsysinfo.sh from C types, to avoid
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// the name conflict.
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#define timeval go_timeval
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#define timespec go_timespec
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#include "runtime.inc"
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#undef timeval
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#undef timespec
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/*
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* Per-CPU declaration.
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*/
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extern M* runtime_m(void);
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extern G* runtime_g(void)
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__asm__(GOSYM_PREFIX "runtime.getg");
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extern M runtime_m0;
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extern G runtime_g0;
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enum
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{
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true = 1,
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false = 0,
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};
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enum
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{
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PtrSize = sizeof(void*),
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};
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enum
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{
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// Per-M stack segment cache size.
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StackCacheSize = 32,
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// Global <-> per-M stack segment cache transfer batch size.
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StackCacheBatch = 16,
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};
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struct SigTab
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{
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int32 sig;
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int32 flags;
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void* fwdsig;
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};
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#ifdef GOOS_nacl
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enum {
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NaCl = 1,
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};
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#else
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enum {
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NaCl = 0,
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};
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#endif
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#ifdef GOOS_windows
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enum {
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Windows = 1
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};
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#else
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enum {
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Windows = 0
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};
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#endif
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#ifdef GOOS_solaris
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enum {
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Solaris = 1
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};
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#else
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enum {
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Solaris = 0
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};
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#endif
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// Parallel for descriptor.
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struct ParFor
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{
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const FuncVal *body; // executed for each element
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uint32 done; // number of idle threads
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uint32 nthr; // total number of threads
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uint32 nthrmax; // maximum number of threads
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uint32 thrseq; // thread id sequencer
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uint32 cnt; // iteration space [0, cnt)
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bool wait; // if true, wait while all threads finish processing,
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// otherwise parfor may return while other threads are still working
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ParForThread *thr; // array of thread descriptors
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// stats
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uint64 nsteal;
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uint64 nstealcnt;
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uint64 nprocyield;
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uint64 nosyield;
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uint64 nsleep;
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};
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extern bool runtime_precisestack;
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extern bool runtime_copystack;
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/*
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* defined macros
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* you need super-gopher-guru privilege
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* to add this list.
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*/
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#define nelem(x) (sizeof(x)/sizeof((x)[0]))
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#define nil ((void*)0)
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#define USED(v) ((void) v)
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#define ROUND(x, n) (((x)+(n)-1)&~(uintptr)((n)-1)) /* all-caps to mark as macro: it evaluates n twice */
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byte* runtime_startup_random_data;
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uint32 runtime_startup_random_data_len;
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void runtime_get_random_data(byte**, int32*);
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enum {
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// hashinit wants this many random bytes
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HashRandomBytes = 32
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};
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void runtime_hashinit(void);
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void runtime_traceback(int32)
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__asm__ (GOSYM_PREFIX "runtime.traceback");
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void runtime_tracebackothers(G*)
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__asm__ (GOSYM_PREFIX "runtime.tracebackothers");
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enum
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{
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// The maximum number of frames we print for a traceback
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TracebackMaxFrames = 100,
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};
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/*
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* external data
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*/
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extern uintptr* runtime_getZerobase(void)
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__asm__(GOSYM_PREFIX "runtime.getZerobase");
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extern G** runtime_allg;
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extern uintptr runtime_allglen;
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extern G* runtime_lastg;
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extern M* runtime_allm;
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extern P** runtime_allp;
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extern int32 runtime_gomaxprocs;
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extern uint32 runtime_needextram;
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extern uint32 runtime_panicking;
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extern int8* runtime_goos;
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extern int32 runtime_ncpu;
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extern void (*runtime_sysargs)(int32, uint8**);
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extern struct debugVars runtime_debug;
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extern bool runtime_isstarted;
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extern bool runtime_isarchive;
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/*
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* common functions and data
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*/
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#define runtime_strcmp(s1, s2) __builtin_strcmp((s1), (s2))
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#define runtime_strncmp(s1, s2, n) __builtin_strncmp((s1), (s2), (n))
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#define runtime_strstr(s1, s2) __builtin_strstr((s1), (s2))
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intgo runtime_findnull(const byte*)
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__asm__ (GOSYM_PREFIX "runtime.findnull");
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void runtime_gogo(G*);
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struct __go_func_type;
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void runtime_args(int32, byte**)
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__asm__ (GOSYM_PREFIX "runtime.args");
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void runtime_osinit();
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void runtime_goargs(void)
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__asm__ (GOSYM_PREFIX "runtime.goargs");
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void runtime_goenvs(void);
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void runtime_goenvs_unix(void)
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__asm__ (GOSYM_PREFIX "runtime.goenvs_unix");
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void runtime_throw(const char*) __attribute__ ((noreturn));
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void runtime_panicstring(const char*) __attribute__ ((noreturn));
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bool runtime_canpanic(G*);
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void runtime_printf(const char*, ...);
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int32 runtime_snprintf(byte*, int32, const char*, ...);
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#define runtime_mcmp(a, b, s) __builtin_memcmp((a), (b), (s))
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#define runtime_memmove(a, b, s) __builtin_memmove((a), (b), (s))
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void* runtime_mal(uintptr);
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String runtime_gostringnocopy(const byte*)
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__asm__ (GOSYM_PREFIX "runtime.gostringnocopy");
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void runtime_schedinit(void);
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void runtime_initsig(bool);
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void runtime_sigenable(uint32 sig);
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void runtime_sigdisable(uint32 sig);
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void runtime_sigignore(uint32 sig);
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int32 runtime_gotraceback(bool *crash);
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void runtime_goroutineheader(G*)
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__asm__ (GOSYM_PREFIX "runtime.goroutineheader");
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void runtime_printtrace(Slice, G*)
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__asm__ (GOSYM_PREFIX "runtime.printtrace");
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#define runtime_open(p, f, m) open((p), (f), (m))
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#define runtime_read(d, v, n) read((d), (v), (n))
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#define runtime_write(d, v, n) write((d), (v), (n))
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#define runtime_close(d) close(d)
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void runtime_ready(G*);
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String runtime_getenv(const char*);
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int32 runtime_atoi(const byte*, intgo);
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void* runtime_mstart(void*);
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G* runtime_malg(int32, byte**, uintptr*);
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void runtime_mpreinit(M*);
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void runtime_minit(void);
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void runtime_unminit(void);
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void runtime_needm(void);
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void runtime_dropm(void);
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void runtime_signalstack(byte*, int32);
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MCache* runtime_allocmcache(void);
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void runtime_freemcache(MCache*);
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void runtime_mallocinit(void);
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void runtime_mprofinit(void);
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#define runtime_malloc(s) __go_alloc(s)
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#define runtime_free(p) __go_free(p)
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#define runtime_getcallersp(p) __builtin_frame_address(1)
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int32 runtime_mcount(void);
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int32 runtime_gcount(void);
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void runtime_mcall(void(*)(G*));
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uint32 runtime_fastrand1(void) __asm__ (GOSYM_PREFIX "runtime.fastrand1");
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int32 runtime_timediv(int64, int32, int32*)
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__asm__ (GOSYM_PREFIX "runtime.timediv");
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int32 runtime_round2(int32 x); // round x up to a power of 2.
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// atomic operations
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#define runtime_cas(pval, old, new) __sync_bool_compare_and_swap (pval, old, new)
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#define runtime_cas64(pval, old, new) __sync_bool_compare_and_swap (pval, old, new)
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#define runtime_casp(pval, old, new) __sync_bool_compare_and_swap (pval, old, new)
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// Don't confuse with XADD x86 instruction,
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// this one is actually 'addx', that is, add-and-fetch.
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#define runtime_xadd(p, v) __sync_add_and_fetch (p, v)
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#define runtime_xadd64(p, v) __sync_add_and_fetch (p, v)
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#define runtime_xchg(p, v) __atomic_exchange_n (p, v, __ATOMIC_SEQ_CST)
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#define runtime_xchg64(p, v) __atomic_exchange_n (p, v, __ATOMIC_SEQ_CST)
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#define runtime_xchgp(p, v) __atomic_exchange_n (p, v, __ATOMIC_SEQ_CST)
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#define runtime_atomicload(p) __atomic_load_n (p, __ATOMIC_SEQ_CST)
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#define runtime_atomicstore(p, v) __atomic_store_n (p, v, __ATOMIC_SEQ_CST)
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#define runtime_atomicstore64(p, v) __atomic_store_n (p, v, __ATOMIC_SEQ_CST)
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#define runtime_atomicload64(p) __atomic_load_n (p, __ATOMIC_SEQ_CST)
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#define runtime_atomicloadp(p) __atomic_load_n (p, __ATOMIC_SEQ_CST)
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#define runtime_atomicstorep(p, v) __atomic_store_n (p, v, __ATOMIC_SEQ_CST)
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void runtime_setg(G*);
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void runtime_newextram(void);
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#define runtime_exit(s) exit(s)
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#define runtime_breakpoint() __builtin_trap()
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void runtime_gosched(void);
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void runtime_gosched0(G*);
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void runtime_schedtrace(bool);
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void runtime_park(bool(*)(G*, void*), void*, const char*);
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void runtime_parkunlock(Lock*, const char*);
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void runtime_tsleep(int64, const char*);
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M* runtime_newm(void);
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void runtime_goexit(void);
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void runtime_entersyscall(int32)
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__asm__ (GOSYM_PREFIX "runtime.entersyscall");
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void runtime_entersyscallblock(int32)
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__asm__ (GOSYM_PREFIX "runtime.entersyscallblock");
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void runtime_exitsyscall(int32)
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__asm__ (GOSYM_PREFIX "runtime.exitsyscall");
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G* __go_go(void (*pfn)(void*), void*);
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void siginit(void);
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bool __go_sigsend(int32 sig);
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int32 runtime_callers(int32, Location*, int32, bool keep_callers);
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int64 runtime_nanotime(void) // monotonic time
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__asm__(GOSYM_PREFIX "runtime.nanotime");
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int64 runtime_unixnanotime(void) // real time, can skip
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__asm__ (GOSYM_PREFIX "runtime.unixnanotime");
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void runtime_dopanic(int32) __attribute__ ((noreturn));
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void runtime_startpanic(void);
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void runtime_freezetheworld(void);
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void runtime_unwindstack(G*, byte*);
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void runtime_sigprof();
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void runtime_resetcpuprofiler(int32);
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void runtime_setcpuprofilerate_m(int32)
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__asm__ (GOSYM_PREFIX "runtime.setcpuprofilerate_m");
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void runtime_cpuprofAdd(Slice)
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__asm__ (GOSYM_PREFIX "runtime.cpuprofAdd");
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void runtime_usleep(uint32)
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__asm__ (GOSYM_PREFIX "runtime.usleep");
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int64 runtime_cputicks(void)
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__asm__ (GOSYM_PREFIX "runtime.cputicks");
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int64 runtime_tickspersecond(void)
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__asm__ (GOSYM_PREFIX "runtime.tickspersecond");
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void runtime_blockevent(int64, int32);
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extern int64 runtime_blockprofilerate;
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G* runtime_netpoll(bool)
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__asm__ (GOSYM_PREFIX "runtime.netpoll");
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void runtime_crash(void);
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void runtime_parsedebugvars(void)
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__asm__(GOSYM_PREFIX "runtime.parsedebugvars");
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void _rt0_go(void);
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intgo runtime_setmaxthreads(intgo)
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__asm__ (GOSYM_PREFIX "runtime.setmaxthreads");
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G* runtime_timejump(void);
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void runtime_iterate_finq(void (*callback)(FuncVal*, void*, const FuncType*, const PtrType*));
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void runtime_stopTheWorldWithSema(void)
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__asm__(GOSYM_PREFIX "runtime.stopTheWorldWithSema");
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void runtime_startTheWorldWithSema(void)
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__asm__(GOSYM_PREFIX "runtime.startTheWorldWithSema");
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void runtime_acquireWorldsema(void)
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__asm__(GOSYM_PREFIX "runtime.acquireWorldsema");
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void runtime_releaseWorldsema(void)
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__asm__(GOSYM_PREFIX "runtime.releaseWorldsema");
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/*
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* mutual exclusion locks. in the uncontended case,
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* as fast as spin locks (just a few user-level instructions),
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* but on the contention path they sleep in the kernel.
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* a zeroed Lock is unlocked (no need to initialize each lock).
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*/
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void runtime_lock(Lock*)
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__asm__(GOSYM_PREFIX "runtime.lock");
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void runtime_unlock(Lock*)
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__asm__(GOSYM_PREFIX "runtime.unlock");
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/*
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* sleep and wakeup on one-time events.
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* before any calls to notesleep or notewakeup,
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* must call noteclear to initialize the Note.
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* then, exactly one thread can call notesleep
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* and exactly one thread can call notewakeup (once).
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* once notewakeup has been called, the notesleep
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* will return. future notesleep will return immediately.
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* subsequent noteclear must be called only after
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* previous notesleep has returned, e.g. it's disallowed
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* to call noteclear straight after notewakeup.
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*
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* notetsleep is like notesleep but wakes up after
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* a given number of nanoseconds even if the event
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* has not yet happened. if a goroutine uses notetsleep to
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* wake up early, it must wait to call noteclear until it
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* can be sure that no other goroutine is calling
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* notewakeup.
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*
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* notesleep/notetsleep are generally called on g0,
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* notetsleepg is similar to notetsleep but is called on user g.
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*/
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void runtime_noteclear(Note*)
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__asm__ (GOSYM_PREFIX "runtime.noteclear");
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void runtime_notesleep(Note*)
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__asm__ (GOSYM_PREFIX "runtime.notesleep");
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void runtime_notewakeup(Note*)
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__asm__ (GOSYM_PREFIX "runtime.notewakeup");
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bool runtime_notetsleep(Note*, int64) // false - timeout
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__asm__ (GOSYM_PREFIX "runtime.notetsleep");
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bool runtime_notetsleepg(Note*, int64) // false - timeout
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__asm__ (GOSYM_PREFIX "runtime.notetsleepg");
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/*
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* Lock-free stack.
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* Initialize uint64 head to 0, compare with 0 to test for emptiness.
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* The stack does not keep pointers to nodes,
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* so they can be garbage collected if there are no other pointers to nodes.
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*/
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void runtime_lfstackpush(uint64 *head, LFNode *node)
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__asm__ (GOSYM_PREFIX "runtime.lfstackpush");
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void* runtime_lfstackpop(uint64 *head)
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__asm__ (GOSYM_PREFIX "runtime.lfstackpop");
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/*
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* Parallel for over [0, n).
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* body() is executed for each iteration.
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* nthr - total number of worker threads.
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* if wait=true, threads return from parfor() when all work is done;
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* otherwise, threads can return while other threads are still finishing processing.
|
|
*/
|
|
ParFor* runtime_parforalloc(uint32 nthrmax);
|
|
void runtime_parforsetup(ParFor *desc, uint32 nthr, uint32 n, bool wait, const FuncVal *body);
|
|
void runtime_parfordo(ParFor *desc);
|
|
void runtime_parforiters(ParFor*, uintptr, uintptr*, uintptr*);
|
|
|
|
/*
|
|
* low level C-called
|
|
*/
|
|
#define runtime_mmap mmap
|
|
#define runtime_munmap munmap
|
|
#define runtime_madvise madvise
|
|
#define runtime_memclr(buf, size) __builtin_memset((buf), 0, (size))
|
|
#define runtime_getcallerpc(p) __builtin_return_address(0)
|
|
|
|
#ifdef __rtems__
|
|
void __wrap_rtems_task_variable_add(void **);
|
|
#endif
|
|
|
|
/*
|
|
* runtime go-called
|
|
*/
|
|
void reflect_call(const struct __go_func_type *, FuncVal *, _Bool, _Bool,
|
|
void **, void **)
|
|
__asm__ (GOSYM_PREFIX "reflect.call");
|
|
#define runtime_panic __go_panic
|
|
|
|
/*
|
|
* runtime c-called (but written in Go)
|
|
*/
|
|
void runtime_printany(Eface)
|
|
__asm__ (GOSYM_PREFIX "runtime.Printany");
|
|
void runtime_newTypeAssertionError(const String*, const String*, const String*, const String*, Eface*)
|
|
__asm__ (GOSYM_PREFIX "runtime.NewTypeAssertionError");
|
|
void runtime_newErrorCString(const char*, Eface*)
|
|
__asm__ (GOSYM_PREFIX "runtime.NewErrorCString");
|
|
|
|
/*
|
|
* wrapped for go users
|
|
*/
|
|
void runtime_semacquire(uint32 volatile *, bool)
|
|
__asm__ (GOSYM_PREFIX "runtime.semacquire");
|
|
void runtime_semrelease(uint32 volatile *)
|
|
__asm__ (GOSYM_PREFIX "runtime.semrelease");
|
|
int32 runtime_gomaxprocsfunc(int32 n);
|
|
void runtime_procyield(uint32)
|
|
__asm__(GOSYM_PREFIX "runtime.procyield");
|
|
void runtime_osyield(void)
|
|
__asm__(GOSYM_PREFIX "runtime.osyield");
|
|
void runtime_lockOSThread(void);
|
|
void runtime_unlockOSThread(void);
|
|
bool runtime_lockedOSThread(void);
|
|
|
|
void runtime_printcreatedby(G*)
|
|
__asm__(GOSYM_PREFIX "runtime.printcreatedby");
|
|
|
|
uintptr runtime_memlimit(void);
|
|
|
|
#define ISNAN(f) __builtin_isnan(f)
|
|
|
|
enum
|
|
{
|
|
UseSpanType = 1,
|
|
};
|
|
|
|
#define runtime_setitimer setitimer
|
|
|
|
void runtime_check(void)
|
|
__asm__ (GOSYM_PREFIX "runtime.check");
|
|
|
|
// A list of global variables that the garbage collector must scan.
|
|
struct root_list {
|
|
struct root_list *next;
|
|
struct root {
|
|
void *decl;
|
|
size_t size;
|
|
} roots[];
|
|
};
|
|
|
|
void __go_register_gc_roots(struct root_list*);
|
|
|
|
// Size of stack space allocated using Go's allocator.
|
|
// This will be 0 when using split stacks, as in that case
|
|
// the stacks are allocated by the splitstack library.
|
|
extern uintptr runtime_stacks_sys;
|
|
|
|
struct backtrace_state;
|
|
extern struct backtrace_state *__go_get_backtrace_state(void);
|
|
extern _Bool __go_file_line(uintptr, int, String*, String*, intgo *);
|
|
extern void runtime_main(void*);
|
|
extern uint32 runtime_in_callers;
|
|
|
|
int32 getproccount(void);
|
|
|
|
#define PREFETCH(p) __builtin_prefetch(p)
|
|
|
|
bool runtime_gcwaiting(void);
|
|
void runtime_badsignal(int);
|
|
Defer* runtime_newdefer(void);
|
|
void runtime_freedefer(Defer*);
|
|
|
|
struct time_now_ret
|
|
{
|
|
int64_t sec;
|
|
int32_t nsec;
|
|
};
|
|
|
|
struct time_now_ret now() __asm__ (GOSYM_PREFIX "time.now")
|
|
__attribute__ ((no_split_stack));
|
|
|
|
extern void _cgo_wait_runtime_init_done (void);
|
|
extern void _cgo_notify_runtime_init_done (void);
|
|
extern _Bool runtime_iscgo;
|
|
extern _Bool runtime_cgoHasExtraM;
|
|
extern Hchan *runtime_main_init_done;
|
|
extern uintptr __go_end __attribute__ ((weak));
|
|
extern void *getitab(const struct __go_type_descriptor *,
|
|
const struct __go_type_descriptor *,
|
|
_Bool)
|
|
__asm__ (GOSYM_PREFIX "runtime.getitab");
|