X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=include%2Fusterr-signal-safe.h;h=c75516be4351a536dda0a09fe7ca894cf6166154;hb=HEAD;hp=1df5ada0ff2ec290d4eb5f53a15836a5bb7cb454;hpb=b52af4675af8dce5a6c99f366102713c335a05da;p=lttng-ust.git diff --git a/include/usterr-signal-safe.h b/include/usterr-signal-safe.h deleted file mode 100644 index 1df5ada0..00000000 --- a/include/usterr-signal-safe.h +++ /dev/null @@ -1,148 +0,0 @@ -#ifndef _USTERR_SIGNAL_SAFE_H -#define _USTERR_SIGNAL_SAFE_H - -/* - * Copyright (C) 2009 Pierre-Marc Fournier - * Copyright (C) 2011 Mathieu Desnoyers - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; version 2.1 of - * the License. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include -#include -#include -#include -#include -#include -#include "lttng/ust-tid.h" - -enum ust_loglevel { - UST_LOGLEVEL_UNKNOWN = 0, - UST_LOGLEVEL_NORMAL, - UST_LOGLEVEL_DEBUG, -}; - -extern volatile enum ust_loglevel ust_loglevel; -void init_usterr(void); - -#ifdef LTTNG_UST_DEBUG -static inline int ust_debug(void) -{ - return 1; -} -#else /* #ifdef LTTNG_UST_DEBUG */ -static inline int ust_debug(void) -{ - return ust_loglevel == UST_LOGLEVEL_DEBUG; -} -#endif /* #else #ifdef LTTNG_UST_DEBUG */ - -#ifndef UST_COMPONENT -//#error UST_COMPONENT is undefined -#define UST_COMPONENT libust -#endif - -/* To stringify the expansion of a define */ -#define UST_XSTR(d) UST_STR(d) -#define UST_STR(s) #s - -#define USTERR_MAX_LEN 512 - -/* We sometimes print in the tracing path, and tracing can occur in - * signal handlers, so we must use a print method which is signal safe. - */ - -extern int ust_safe_snprintf(char *str, size_t n, const char *fmt, ...) - __attribute__ ((format (printf, 3, 4))); - -static inline void __attribute__ ((format (printf, 1, 2))) - __check_ust_safe_fmt(const char *fmt, ...) -{ -} - -/* Can't use dynamic allocation. Limit ourselves to USTERR_MAX_LEN chars. */ -/* Add end of string in case of buffer overflow. */ -#define sigsafe_print_err(fmt, args...) \ -do { \ - if (ust_debug()) { \ - char ____buf[USTERR_MAX_LEN]; \ - int ____saved_errno; \ - \ - ____saved_errno = errno; /* signal-safety */ \ - ust_safe_snprintf(____buf, sizeof(____buf), fmt, ## args); \ - ____buf[sizeof(____buf) - 1] = 0; \ - patient_write(STDERR_FILENO, ____buf, strlen(____buf)); \ - errno = ____saved_errno; /* signal-safety */ \ - fflush(stderr); \ - } \ -} while (0) - -#define UST_STR_COMPONENT UST_XSTR(UST_COMPONENT) - -#define ERRMSG(fmt, args...) \ - do { \ - sigsafe_print_err(UST_STR_COMPONENT "[%ld/%ld]: " fmt " (in %s() at " __FILE__ ":" UST_XSTR(__LINE__) ")\n", \ - (long) getpid(), \ - (long) gettid(), \ - ## args, __func__); \ - } while(0) - - -#define DBG(fmt, args...) ERRMSG(fmt, ## args) -#define DBG_raw(fmt, args...) sigsafe_print_err(fmt, ## args) -#define WARN(fmt, args...) ERRMSG("Warning: " fmt, ## args) -#define ERR(fmt, args...) ERRMSG("Error: " fmt, ## args) -#define BUG(fmt, args...) ERRMSG("BUG: " fmt, ## args) - -#if !defined(__GLIBC__) || ((_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !defined(_GNU_SOURCE)) -/* - * Version using XSI strerror_r. - */ -#define PERROR(call, args...) \ - do { \ - if (ust_debug()) { \ - char buf[200] = "Error in strerror_r()"; \ - strerror_r(errno, buf, sizeof(buf)); \ - ERRMSG("Error: " call ": %s", ## args, buf); \ - } \ - } while(0) -#else -/* - * Version using GNU strerror_r, for linux with appropriate defines. - */ -#define PERROR(call, args...) \ - do { \ - if (ust_debug()) { \ - char *buf; \ - char tmp[200]; \ - buf = strerror_r(errno, tmp, sizeof(tmp)); \ - ERRMSG("Error: " call ": %s", ## args, buf); \ - } \ - } while(0) -#endif - -#define BUG_ON(condition) \ - do { \ - if (caa_unlikely(condition)) \ - ERR("condition not respected (BUG) on line %s:%d", __FILE__, __LINE__); \ - } while(0) -#define WARN_ON(condition) \ - do { \ - if (caa_unlikely(condition)) \ - WARN("condition not respected on line %s:%d", __FILE__, __LINE__); \ - } while(0) -#define WARN_ON_ONCE(condition) WARN_ON(condition) - -#endif /* _USTERR_SIGNAL_SAFE_H */