9e45ca5f83
PR go/81451
runtime: inline runtime_osinit
We had two identical copies of runtime_osinit. They set runtime_ncpu,
a variable that is no longer used. Removing that leaves us with two lines.
Inline those two lines in the two places the function was called.
This fixes GCC PR 81451.
Reviewed-on: https://go-review.googlesource.com/48862
From-SVN: r250326
126 lines
3.2 KiB
C
126 lines
3.2 KiB
C
/* go-libmain.c -- the startup function for a Go library.
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Copyright 2015 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 <errno.h>
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#include <pthread.h>
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#include <stdlib.h>
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#include <time.h>
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#include <unistd.h>
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#include "runtime.h"
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#include "array.h"
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#include "arch.h"
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/* This is used when building a standalone Go library using the Go
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command's -buildmode=c-archive or -buildmode=c-shared option. It
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starts up the Go code as a global constructor but does not take any
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other action. The main program is written in some other language
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and calls exported Go functions as needed. */
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static void die (const char *, int);
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/* .init_array section does not exist in AIX XCOFF.
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-Wl,-binitfini:__go_init option will be required to build go
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libraries and make sure __go_init is called when the library is
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loaded. This requires __go_init to be exported. */
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void __go_init (int, char **, char **);
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static void *gostart (void *);
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/* Used to pass arguments to the thread that runs the Go startup. */
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struct args {
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int argc;
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char **argv;
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};
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#ifndef _AIX
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/* We use .init_array so that we can get the command line arguments.
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This obviously assumes .init_array support; different systems may
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require other approaches. */
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typedef void (*initarrayfn) (int, char **, char **);
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static initarrayfn initarray[1]
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__attribute__ ((section (".init_array"), used)) =
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{ __go_init };
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#endif
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/* This function is called at program startup time. It starts a new
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thread to do the actual Go startup, so that program startup is not
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paused waiting for the Go initialization functions. Exported cgo
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functions will wait for initialization to complete if
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necessary. */
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void
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__go_init (int argc, char **argv, char** env __attribute__ ((unused)))
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{
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int err;
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pthread_attr_t attr;
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struct args *a;
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pthread_t tid;
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runtime_isarchive = true;
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setIsCgo ();
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runtime_cpuinit ();
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runtime_initsig(true);
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a = (struct args *) malloc (sizeof *a);
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if (a == NULL)
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die ("malloc", errno);
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a->argc = argc;
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a->argv = argv;
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err = pthread_attr_init (&attr);
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if (err != 0)
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die ("pthread_attr_init", err);
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err = pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
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if (err != 0)
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die ("pthread_attr_setdetachstate", err);
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err = pthread_create (&tid, &attr, gostart, (void *) a);
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if (err != 0)
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die ("pthread_create", err);
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err = pthread_attr_destroy (&attr);
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if (err != 0)
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die ("pthread_attr_destroy", err);
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}
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/* Start up the Go runtime. */
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static void *
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gostart (void *arg)
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{
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struct args *a = (struct args *) arg;
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if (runtime_isstarted)
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return NULL;
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runtime_isstarted = true;
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runtime_check ();
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runtime_args (a->argc, (byte **) a->argv);
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setncpu (getproccount ());
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setpagesize (getpagesize ());
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runtime_sched = runtime_getsched();
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runtime_schedinit ();
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__go_go (runtime_main, NULL);
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runtime_mstart (runtime_m ());
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abort ();
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}
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/* If something goes wrong during program startup, crash. There is no
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way to report failure and nobody to whom to report it. */
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static void
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die (const char *fn, int err)
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{
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fprintf (stderr, "%s: %d\n", fn, err);
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exit (EXIT_FAILURE);
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}
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