5419b94747
I gave up trying to use the usual thread-local buffer idiom; calls to calloc(3) and free(3) from any of the "dl" functions -- which live in the dynamic linker -- end up resolving to the dynamic linker's stubs. I tried to work around that, but was just making things more complicated. This alternative costs us a well-known TLS slot (instead of the dynamically-allocated TLS slot we'd have used otherwise, so no difference there), plus an extra buffer inside every pthread_internal_t. Bug: 5404023 Change-Id: Ie9614edd05b6d1eeaf7bf9172792d616c6361767
46 lines
1.9 KiB
C++
46 lines
1.9 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.
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include "ThreadLocalBuffer.h"
|
|
|
|
extern "C" const char* __strerror_lookup(int);
|
|
|
|
GLOBAL_INIT_THREAD_LOCAL_BUFFER(strerror);
|
|
|
|
char* strerror(int error_number) {
|
|
// Just return the original constant in the easy cases.
|
|
char* result = const_cast<char*>(__strerror_lookup(error_number));
|
|
if (result != NULL) {
|
|
return result;
|
|
}
|
|
|
|
LOCAL_INIT_THREAD_LOCAL_BUFFER(char*, strerror, NL_TEXTMAX);
|
|
strerror_r(error_number, strerror_tls_buffer, strerror_tls_buffer_size);
|
|
return strerror_tls_buffer;
|
|
}
|