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Wrap strerror() in a function that makes it thread safe and converts the

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output to UTF-8.


git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@945 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Pierre Ossman 2006-05-22 15:20:46 +00:00
parent bf09399d0e
commit 4e3dc7ce68
49 changed files with 337 additions and 169 deletions
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90
src/polyp/error.c
View file

@ -23,9 +23,23 @@
#include <config.h>
#endif
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_PTHREAD
#include <pthread.h>
#endif
#ifdef HAVE_WINDOWS_H
#include <windows.h>
#endif
#include <polyp/utf8.h>
#include <polyp/xmalloc.h>
#include <polypcore/core-util.h>
#include <polypcore/native-common.h>
#include "error.h"
@ -58,3 +72,79 @@ const char*pa_strerror(int error) {
return errortab[error];
}
#ifdef HAVE_PTHREAD
static pthread_once_t cstrerror_once = PTHREAD_ONCE_INIT;
static pthread_key_t tlsstr_key;
static void inittls(void) {
int ret;
ret = pthread_key_create(&tlsstr_key, pa_xfree);
if (ret) {
fprintf(stderr, __FILE__ ": CRITICAL: Unable to allocate TLS key (%d)\n", errno);
exit(-1);
}
}
#elif HAVE_WINDOWS_H
static __declspec(thread) char *tlsstr;
#else
/* Unsafe, but we have no choice */
static char *tlsstr;
#endif
char* pa_cstrerror(int errnum) {
const char *origbuf;
#ifdef HAVE_STRERROR_R
char errbuf[128];
#endif
#ifdef HAVE_PTHREAD
char *tlsstr;
pthread_once(&cstrerror_once, inittls);
tlsstr = pthread_getspecific(tlsstr_key);
#endif
if (tlsstr)
pa_xfree(tlsstr);
#ifdef HAVE_STRERROR_R
#ifdef __GLIBC__
origbuf = strerror_r(errnum, errbuf, sizeof(errbuf));
if (origbuf == NULL)
origbuf = "";
#else
if (strerror_r(errnum, errbuf, sizeof(errbuf)) == 0) {
origbuf = errbuf;
errbuf[sizeof(errbuf) - 1] = '\0';
} else
origbuf = "";
#endif
#else
/* This might not be thread safe, but we hope for the best */
origbuf = strerror(errnum);
#endif
tlsstr = pa_locale_to_utf8(origbuf);
if (!tlsstr) {
fprintf(stderr, "Unable to convert, filtering\n");
tlsstr = pa_utf8_filter(origbuf);
}
#ifdef HAVE_PTHREAD
pthread_setspecific(tlsstr_key, tlsstr);
#endif
return tlsstr;
}