diff options
Diffstat (limited to 'src/spdk/lib/log/log.c')
| -rw-r--r-- | src/spdk/lib/log/log.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/src/spdk/lib/log/log.c b/src/spdk/lib/log/log.c new file mode 100644 index 00000000..9f4546ce --- /dev/null +++ b/src/spdk/lib/log/log.c @@ -0,0 +1,189 @@ +/*- + * BSD LICENSE + * + * Copyright (c) Intel Corporation. + * 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. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 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 "spdk/stdinc.h" + +#include "spdk_internal/log.h" + +#ifdef SPDK_LOG_BACKTRACE_LVL +#define UNW_LOCAL_ONLY +#include <libunwind.h> +#endif + +static const char *const spdk_level_names[] = { + [SPDK_LOG_ERROR] = "ERROR", + [SPDK_LOG_WARN] = "WARNING", + [SPDK_LOG_NOTICE] = "NOTICE", + [SPDK_LOG_INFO] = "INFO", + [SPDK_LOG_DEBUG] = "DEBUG", +}; + +#define MAX_TMPBUF 1024 + +void +spdk_log_open(void) +{ + openlog("spdk", LOG_PID, LOG_LOCAL7); +} + +void +spdk_log_close(void) +{ + closelog(); +} + +#ifdef SPDK_LOG_BACKTRACE_LVL +static void +spdk_log_unwind_stack(FILE *fp, enum spdk_log_level level) +{ + unw_error_t err; + unw_cursor_t cursor; + unw_context_t uc; + unw_word_t ip; + unw_word_t offp; + char f_name[64]; + int frame; + + if (level > g_spdk_log_backtrace_level) { + return; + } + + unw_getcontext(&uc); + unw_init_local(&cursor, &uc); + fprintf(fp, "*%s*: === BACKTRACE START ===\n", spdk_level_names[level]); + + unw_step(&cursor); + for (frame = 1; unw_step(&cursor) > 0; frame++) { + unw_get_reg(&cursor, UNW_REG_IP, &ip); + err = unw_get_proc_name(&cursor, f_name, sizeof(f_name), &offp); + if (err || strcmp(f_name, "main") == 0) { + break; + } + + fprintf(fp, "*%s*: %3d: %*s%s() at %#lx\n", spdk_level_names[level], frame, frame - 1, "", f_name, + (unsigned long)ip); + } + fprintf(fp, "*%s*: === BACKTRACE END ===\n", spdk_level_names[level]); +} + +#else +#define spdk_log_unwind_stack(fp, lvl) +#endif + +void +spdk_log(enum spdk_log_level level, const char *file, const int line, const char *func, + const char *format, ...) +{ + int severity = LOG_INFO; + char buf[MAX_TMPBUF]; + va_list ap; + + switch (level) { + case SPDK_LOG_ERROR: + severity = LOG_ERR; + break; + case SPDK_LOG_WARN: + severity = LOG_WARNING; + break; + case SPDK_LOG_NOTICE: + severity = LOG_NOTICE; + break; + case SPDK_LOG_INFO: + case SPDK_LOG_DEBUG: + severity = LOG_INFO; + break; + case SPDK_LOG_DISABLED: + return; + } + + va_start(ap, format); + + vsnprintf(buf, sizeof(buf), format, ap); + + if (level <= g_spdk_log_print_level) { + fprintf(stderr, "%s:%4d:%s: *%s*: %s", file, line, func, spdk_level_names[level], buf); + spdk_log_unwind_stack(stderr, level); + } + + if (level <= g_spdk_log_level) { + syslog(severity, "%s:%4d:%s: *%s*: %s", file, line, func, spdk_level_names[level], buf); + } + + va_end(ap); +} + +static void +fdump(FILE *fp, const char *label, const uint8_t *buf, size_t len) +{ + char tmpbuf[MAX_TMPBUF]; + char buf16[16 + 1]; + size_t total; + unsigned int idx; + + fprintf(fp, "%s\n", label); + + memset(buf16, 0, sizeof buf16); + total = 0; + for (idx = 0; idx < len; idx++) { + if (idx != 0 && idx % 16 == 0) { + snprintf(tmpbuf + total, sizeof tmpbuf - total, + " %s", buf16); + fprintf(fp, "%s\n", tmpbuf); + total = 0; + } + if (idx % 16 == 0) { + total += snprintf(tmpbuf + total, sizeof tmpbuf - total, + "%08x ", idx); + } + if (idx % 8 == 0) { + total += snprintf(tmpbuf + total, sizeof tmpbuf - total, + "%s", " "); + } + total += snprintf(tmpbuf + total, sizeof tmpbuf - total, + "%2.2x ", buf[idx] & 0xff); + buf16[idx % 16] = isprint(buf[idx]) ? buf[idx] : '.'; + } + for (; idx % 16 != 0; idx++) { + total += snprintf(tmpbuf + total, sizeof tmpbuf - total, " "); + buf16[idx % 16] = ' '; + } + snprintf(tmpbuf + total, sizeof tmpbuf - total, " %s", buf16); + fprintf(fp, "%s\n", tmpbuf); + fflush(fp); +} + +void +spdk_trace_dump(FILE *fp, const char *label, const void *buf, size_t len) +{ + fdump(fp, label, buf, len); +} |