gcc/libgo/runtime/go-send-nb-big.c

30 lines
717 B
C

/* go-send-nb-big.c -- nonblocking send of something big on a channel.
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 <stdint.h>
#include "channel.h"
_Bool
__go_send_nonblocking_big (struct __go_channel* channel, const void *val)
{
size_t alloc_size;
size_t offset;
alloc_size = ((channel->element_size + sizeof (uint64_t) - 1)
/ sizeof (uint64_t));
if (!__go_send_nonblocking_acquire (channel))
return 0;
offset = channel->next_store * alloc_size;
__builtin_memcpy (&channel->data[offset], val, channel->element_size);
__go_send_release (channel);
return 1;
}