2a1bb4e646
POSIX says pthread_create returns EAGAIN, not ENOMEM. Also pull pthread_attr_t functions into their own file. Also pull pthread_setname_np into its own file. Also remove unnecessary #includes from pthread_key.cpp. Also account for those pthread keys used internally by bionic, so they don't count against the number of keys available to user code. (They do with glibc, but glibc's limit is the much more generous 1024.) Also factor out the common errno-restoring idiom to reduce gotos. Bug: 6702535 Change-Id: I555e66efffcf2c1b5a2873569e91489156efca42
59 lines
2.7 KiB
C
59 lines
2.7 KiB
C
/*
|
|
* Copyright (C) 2012 The Android Open Source Project
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
|
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _BIONIC_THREAD_LOCAL_BUFFER_H_included
|
|
#define _BIONIC_THREAD_LOCAL_BUFFER_H_included
|
|
|
|
#include <malloc.h>
|
|
#include <pthread.h>
|
|
|
|
// libstdc++ currently contains __cxa_guard_acquire and __cxa_guard_release,
|
|
// so we make do with macros instead of a C++ class.
|
|
// TODO: move __cxa_guard_acquire and __cxa_guard_release into libc.
|
|
|
|
#define GLOBAL_INIT_THREAD_LOCAL_BUFFER(name) \
|
|
static pthread_key_t __bionic_tls_ ## name ## _key; \
|
|
static void __bionic_tls_ ## name ## _key_destroy(void* buffer) { \
|
|
free(buffer); \
|
|
} \
|
|
/* Run automatically when libc.so is opened by the dynamic linker. */ \
|
|
__attribute__((constructor)) static void __bionic_tls_ ## name ## _key_init() { \
|
|
pthread_key_create(&__bionic_tls_ ## name ## _key, __bionic_tls_ ## name ## _key_destroy); \
|
|
}
|
|
|
|
// Leaves "name_tls_buffer" and "name_tls_buffer_size" defined and initialized.
|
|
#define LOCAL_INIT_THREAD_LOCAL_BUFFER(type, name, byte_count) \
|
|
type name ## _tls_buffer = \
|
|
reinterpret_cast<type>(pthread_getspecific(__bionic_tls_ ## name ## _key)); \
|
|
if (name ## _tls_buffer == NULL) { \
|
|
name ## _tls_buffer = reinterpret_cast<type>(calloc(1, byte_count)); \
|
|
pthread_setspecific(__bionic_tls_ ## name ## _key, name ## _tls_buffer); \
|
|
} \
|
|
const size_t name ## _tls_buffer_size __attribute__((unused)) = byte_count
|
|
|
|
#endif // _BIONIC_THREAD_LOCAL_BUFFER_H_included
|