root/src/pkg/runtime/cgo/gcc_util.c

DEFINITIONS

1. x_cgo_malloc
2. x_cgo_free
3. x_cgo_thread_start

// Copyright 2009 The Go Authors.  All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#include "libcgo.h"

/* Stub for calling malloc from Go */
void
x_cgo_malloc(void *p)
{
        struct a {
                long long n;
                void *ret;
        } *a = p;

        a->ret = malloc(a->n);
        if(a->ret == NULL && a->n == 0)
                a->ret = malloc(1);
}

/* Stub for calling free from Go */
void
x_cgo_free(void *p)
{
        struct a {
                void *arg;
        } *a = p;

        free(a->arg);
}

/* Stub for creating a new thread */
void
x_cgo_thread_start(ThreadStart *arg)
{
        ThreadStart *ts;

        /* Make our own copy that can persist after we return. */
        ts = malloc(sizeof *ts);
        if(ts == nil) {
                fprintf(stderr, "runtime/cgo: out of memory in thread_start\n");
                abort();
        }
        *ts = *arg;

        _cgo_sys_thread_start(ts);      /* OS-dependent half */
}