0d3dd8fb65
Remove support for _cgo_allocate. It was removed from the gc
toolchain in Go 1.5, so it is unlikely that anybody is trying to use it.
Reviewed-on: https://go-review.googlesource.com/34557
From-SVN: r243805
65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
/* go-cgo.c -- SWIG support routines for libgo.
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Copyright 2011 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 "runtime.h"
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/* Used for _cgo_wait_runtime_init_done. This is based on code in
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runtime/cgo/gcc_libinit.c in the master library. */
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static pthread_cond_t runtime_init_cond = PTHREAD_COND_INITIALIZER;
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static pthread_mutex_t runtime_init_mu = PTHREAD_MUTEX_INITIALIZER;
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static _Bool runtime_init_done;
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/* This is called by exported cgo functions to ensure that the runtime
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has been initialized before we enter the function. This is needed
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when building with -buildmode=c-archive or similar. */
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void
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_cgo_wait_runtime_init_done (void)
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{
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int err;
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if (__atomic_load_n (&runtime_init_done, __ATOMIC_ACQUIRE))
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return;
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err = pthread_mutex_lock (&runtime_init_mu);
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if (err != 0)
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abort ();
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while (!__atomic_load_n (&runtime_init_done, __ATOMIC_ACQUIRE))
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{
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err = pthread_cond_wait (&runtime_init_cond, &runtime_init_mu);
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if (err != 0)
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abort ();
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}
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err = pthread_mutex_unlock (&runtime_init_mu);
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if (err != 0)
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abort ();
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}
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/* This is called by runtime_main after the Go runtime is
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initialized. */
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void
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_cgo_notify_runtime_init_done (void)
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{
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int err;
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err = pthread_mutex_lock (&runtime_init_mu);
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if (err != 0)
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abort ();
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__atomic_store_n (&runtime_init_done, 1, __ATOMIC_RELEASE);
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err = pthread_cond_broadcast (&runtime_init_cond);
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if (err != 0)
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abort ();
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err = pthread_mutex_unlock (&runtime_init_mu);
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if (err != 0)
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abort ();
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}
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// runtime_iscgo is set to true if some cgo code is linked in.
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// This is done by a constructor in the cgo generated code.
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_Bool runtime_iscgo;
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