r4056 - trunk/varnish-cache/lib/libvarnishcompat
phk at projects.linpro.no
phk at projects.linpro.no
Sat May 9 17:46:04 CEST 2009
Author: phk
Date: 2009-05-09 17:46:04 +0200 (Sat, 09 May 2009)
New Revision: 4056
Added:
trunk/varnish-cache/lib/libvarnishcompat/execinfo.c
Modified:
trunk/varnish-cache/lib/libvarnishcompat/Makefile.am
Log:
Add a compat version of backtrace()/backtrace_symbols() written by
Maxim Sobolev <sobomax at FreeBSD.org>
Modified: trunk/varnish-cache/lib/libvarnishcompat/Makefile.am
===================================================================
--- trunk/varnish-cache/lib/libvarnishcompat/Makefile.am 2009-05-09 10:26:29 UTC (rev 4055)
+++ trunk/varnish-cache/lib/libvarnishcompat/Makefile.am 2009-05-09 15:46:04 UTC (rev 4056)
@@ -9,6 +9,7 @@
libvarnishcompat_la_SOURCES = \
asprintf.c \
daemon.c \
+ execinfo.c \
vasprintf.c \
setproctitle.c \
srandomdev.c \
Added: trunk/varnish-cache/lib/libvarnishcompat/execinfo.c
===================================================================
--- trunk/varnish-cache/lib/libvarnishcompat/execinfo.c (rev 0)
+++ trunk/varnish-cache/lib/libvarnishcompat/execinfo.c 2009-05-09 15:46:04 UTC (rev 4056)
@@ -0,0 +1,438 @@
+/*
+ * Copyright (c) 2003 Maxim Sobolev <sobomax at FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. 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 AUTHOR 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 AUTHOR 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.
+ *
+ * $Id: execinfo.c,v 1.3 2004/07/19 05:21:09 sobomax Exp $
+ */
+
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <dlfcn.h>
+#include <math.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "execinfo.h"
+
+void *getreturnaddr(int);
+void *getframeaddr(int);
+
+#define D10(x) ceil(log10(((x) == 0) ? 2 : ((x) + 1)))
+
+inline static void *
+realloc_safe(void *ptr, size_t size)
+{
+ void *nptr;
+
+ nptr = realloc(ptr, size);
+ if (nptr == NULL)
+ free(ptr);
+ return nptr;
+}
+
+int
+backtrace(void **buffer, int size)
+{
+ int i;
+
+ for (i = 1; getframeaddr(i + 1) != NULL && i != size + 1; i++) {
+ buffer[i - 1] = getreturnaddr(i);
+ if (buffer[i - 1] == NULL)
+ break;
+ }
+
+ return i - 1;
+}
+
+char **
+backtrace_symbols(void *const *buffer, int size)
+{
+ size_t clen, alen;
+ int i, offset;
+ char **rval;
+ Dl_info info;
+
+ clen = size * sizeof(char *);
+ rval = malloc(clen);
+ if (rval == NULL)
+ return NULL;
+ for (i = 0; i < size; i++) {
+ if (dladdr(buffer[i], &info) != 0) {
+ if (info.dli_sname == NULL)
+ info.dli_sname = "???";
+ if (info.dli_saddr == NULL)
+ info.dli_saddr = buffer[i];
+ offset = (const char*)buffer[i] - (const char*)info.dli_saddr;
+ /* "0x01234567 <function+offset> at filename" */
+ alen = 2 + /* "0x" */
+ (sizeof(void *) * 2) + /* "01234567" */
+ 2 + /* " <" */
+ strlen(info.dli_sname) + /* "function" */
+ 1 + /* "+" */
+ 10 + /* "offset */
+ 5 + /* "> at " */
+ strlen(info.dli_fname) + /* "filename" */
+ 1; /* "\0" */
+ rval = realloc_safe(rval, clen + alen);
+ if (rval == NULL)
+ return NULL;
+ snprintf((char *) rval + clen, alen, "%p <%s+%d> at %s",
+ buffer[i], info.dli_sname, offset, info.dli_fname);
+ } else {
+ alen = 2 + /* "0x" */
+ (sizeof(void *) * 2) + /* "01234567" */
+ 1; /* "\0" */
+ rval = realloc_safe(rval, clen + alen);
+ if (rval == NULL)
+ return NULL;
+ snprintf((char *) rval + clen, alen, "%p", buffer[i]);
+ }
+ rval[i] = (char *) clen;
+ clen += alen;
+ }
+
+ for (i = 0; i < size; i++)
+ rval[i] += (long) rval;
+
+ return rval;
+}
+
+void
+backtrace_symbols_fd(void *const *buffer, int size, int fd)
+{
+ int i, len, offset;
+ char *buf;
+ Dl_info info;
+
+ for (i = 0; i < size; i++) {
+ if (dladdr(buffer[i], &info) != 0) {
+ if (info.dli_sname == NULL)
+ info.dli_sname = "???";
+ if (info.dli_saddr == NULL)
+ info.dli_saddr = buffer[i];
+ offset = (const char *)buffer[i] - (const char *)info.dli_saddr;
+ /* "0x01234567 <function+offset> at filename" */
+ len = 2 + /* "0x" */
+ (sizeof(void *) * 2) + /* "01234567" */
+ 2 + /* " <" */
+ strlen(info.dli_sname) + /* "function" */
+ 1 + /* "+" */
+ D10(offset) + /* "offset */
+ 5 + /* "> at " */
+ strlen(info.dli_fname) + /* "filename" */
+ 2; /* "\n\0" */
+ buf = alloca(len);
+ if (buf == NULL)
+ return;
+ snprintf(buf, len, "%p <%s+%d> at %s\n",
+ buffer[i], info.dli_sname, offset, info.dli_fname);
+ } else {
+ len = 2 + /* "0x" */
+ (sizeof(void *) * 2) + /* "01234567" */
+ 2; /* "\n\0" */
+ buf = alloca(len);
+ if (buf == NULL)
+ return;
+ snprintf(buf, len, "%p\n", buffer[i]);
+ }
+ write(fd, buf, len - 1);
+ }
+}
+
+void *
+getreturnaddr(int level)
+{
+
+ switch(level) {
+ case 0: return __builtin_return_address(1);
+ case 1: return __builtin_return_address(2);
+ case 2: return __builtin_return_address(3);
+ case 3: return __builtin_return_address(4);
+ case 4: return __builtin_return_address(5);
+ case 5: return __builtin_return_address(6);
+ case 6: return __builtin_return_address(7);
+ case 7: return __builtin_return_address(8);
+ case 8: return __builtin_return_address(9);
+ case 9: return __builtin_return_address(10);
+ case 10: return __builtin_return_address(11);
+ case 11: return __builtin_return_address(12);
+ case 12: return __builtin_return_address(13);
+ case 13: return __builtin_return_address(14);
+ case 14: return __builtin_return_address(15);
+ case 15: return __builtin_return_address(16);
+ case 16: return __builtin_return_address(17);
+ case 17: return __builtin_return_address(18);
+ case 18: return __builtin_return_address(19);
+ case 19: return __builtin_return_address(20);
+ case 20: return __builtin_return_address(21);
+ case 21: return __builtin_return_address(22);
+ case 22: return __builtin_return_address(23);
+ case 23: return __builtin_return_address(24);
+ case 24: return __builtin_return_address(25);
+ case 25: return __builtin_return_address(26);
+ case 26: return __builtin_return_address(27);
+ case 27: return __builtin_return_address(28);
+ case 28: return __builtin_return_address(29);
+ case 29: return __builtin_return_address(30);
+ case 30: return __builtin_return_address(31);
+ case 31: return __builtin_return_address(32);
+ case 32: return __builtin_return_address(33);
+ case 33: return __builtin_return_address(34);
+ case 34: return __builtin_return_address(35);
+ case 35: return __builtin_return_address(36);
+ case 36: return __builtin_return_address(37);
+ case 37: return __builtin_return_address(38);
+ case 38: return __builtin_return_address(39);
+ case 39: return __builtin_return_address(40);
+ case 40: return __builtin_return_address(41);
+ case 41: return __builtin_return_address(42);
+ case 42: return __builtin_return_address(43);
+ case 43: return __builtin_return_address(44);
+ case 44: return __builtin_return_address(45);
+ case 45: return __builtin_return_address(46);
+ case 46: return __builtin_return_address(47);
+ case 47: return __builtin_return_address(48);
+ case 48: return __builtin_return_address(49);
+ case 49: return __builtin_return_address(50);
+ case 50: return __builtin_return_address(51);
+ case 51: return __builtin_return_address(52);
+ case 52: return __builtin_return_address(53);
+ case 53: return __builtin_return_address(54);
+ case 54: return __builtin_return_address(55);
+ case 55: return __builtin_return_address(56);
+ case 56: return __builtin_return_address(57);
+ case 57: return __builtin_return_address(58);
+ case 58: return __builtin_return_address(59);
+ case 59: return __builtin_return_address(60);
+ case 60: return __builtin_return_address(61);
+ case 61: return __builtin_return_address(62);
+ case 62: return __builtin_return_address(63);
+ case 63: return __builtin_return_address(64);
+ case 64: return __builtin_return_address(65);
+ case 65: return __builtin_return_address(66);
+ case 66: return __builtin_return_address(67);
+ case 67: return __builtin_return_address(68);
+ case 68: return __builtin_return_address(69);
+ case 69: return __builtin_return_address(70);
+ case 70: return __builtin_return_address(71);
+ case 71: return __builtin_return_address(72);
+ case 72: return __builtin_return_address(73);
+ case 73: return __builtin_return_address(74);
+ case 74: return __builtin_return_address(75);
+ case 75: return __builtin_return_address(76);
+ case 76: return __builtin_return_address(77);
+ case 77: return __builtin_return_address(78);
+ case 78: return __builtin_return_address(79);
+ case 79: return __builtin_return_address(80);
+ case 80: return __builtin_return_address(81);
+ case 81: return __builtin_return_address(82);
+ case 82: return __builtin_return_address(83);
+ case 83: return __builtin_return_address(84);
+ case 84: return __builtin_return_address(85);
+ case 85: return __builtin_return_address(86);
+ case 86: return __builtin_return_address(87);
+ case 87: return __builtin_return_address(88);
+ case 88: return __builtin_return_address(89);
+ case 89: return __builtin_return_address(90);
+ case 90: return __builtin_return_address(91);
+ case 91: return __builtin_return_address(92);
+ case 92: return __builtin_return_address(93);
+ case 93: return __builtin_return_address(94);
+ case 94: return __builtin_return_address(95);
+ case 95: return __builtin_return_address(96);
+ case 96: return __builtin_return_address(97);
+ case 97: return __builtin_return_address(98);
+ case 98: return __builtin_return_address(99);
+ case 99: return __builtin_return_address(100);
+ case 100: return __builtin_return_address(101);
+ case 101: return __builtin_return_address(102);
+ case 102: return __builtin_return_address(103);
+ case 103: return __builtin_return_address(104);
+ case 104: return __builtin_return_address(105);
+ case 105: return __builtin_return_address(106);
+ case 106: return __builtin_return_address(107);
+ case 107: return __builtin_return_address(108);
+ case 108: return __builtin_return_address(109);
+ case 109: return __builtin_return_address(110);
+ case 110: return __builtin_return_address(111);
+ case 111: return __builtin_return_address(112);
+ case 112: return __builtin_return_address(113);
+ case 113: return __builtin_return_address(114);
+ case 114: return __builtin_return_address(115);
+ case 115: return __builtin_return_address(116);
+ case 116: return __builtin_return_address(117);
+ case 117: return __builtin_return_address(118);
+ case 118: return __builtin_return_address(119);
+ case 119: return __builtin_return_address(120);
+ case 120: return __builtin_return_address(121);
+ case 121: return __builtin_return_address(122);
+ case 122: return __builtin_return_address(123);
+ case 123: return __builtin_return_address(124);
+ case 124: return __builtin_return_address(125);
+ case 125: return __builtin_return_address(126);
+ case 126: return __builtin_return_address(127);
+ case 127: return __builtin_return_address(128);
+ default: return NULL;
+ }
+}
+
+void *
+getframeaddr(int level)
+{
+
+ switch(level) {
+ case 0: return __builtin_frame_address(1);
+ case 1: return __builtin_frame_address(2);
+ case 2: return __builtin_frame_address(3);
+ case 3: return __builtin_frame_address(4);
+ case 4: return __builtin_frame_address(5);
+ case 5: return __builtin_frame_address(6);
+ case 6: return __builtin_frame_address(7);
+ case 7: return __builtin_frame_address(8);
+ case 8: return __builtin_frame_address(9);
+ case 9: return __builtin_frame_address(10);
+ case 10: return __builtin_frame_address(11);
+ case 11: return __builtin_frame_address(12);
+ case 12: return __builtin_frame_address(13);
+ case 13: return __builtin_frame_address(14);
+ case 14: return __builtin_frame_address(15);
+ case 15: return __builtin_frame_address(16);
+ case 16: return __builtin_frame_address(17);
+ case 17: return __builtin_frame_address(18);
+ case 18: return __builtin_frame_address(19);
+ case 19: return __builtin_frame_address(20);
+ case 20: return __builtin_frame_address(21);
+ case 21: return __builtin_frame_address(22);
+ case 22: return __builtin_frame_address(23);
+ case 23: return __builtin_frame_address(24);
+ case 24: return __builtin_frame_address(25);
+ case 25: return __builtin_frame_address(26);
+ case 26: return __builtin_frame_address(27);
+ case 27: return __builtin_frame_address(28);
+ case 28: return __builtin_frame_address(29);
+ case 29: return __builtin_frame_address(30);
+ case 30: return __builtin_frame_address(31);
+ case 31: return __builtin_frame_address(32);
+ case 32: return __builtin_frame_address(33);
+ case 33: return __builtin_frame_address(34);
+ case 34: return __builtin_frame_address(35);
+ case 35: return __builtin_frame_address(36);
+ case 36: return __builtin_frame_address(37);
+ case 37: return __builtin_frame_address(38);
+ case 38: return __builtin_frame_address(39);
+ case 39: return __builtin_frame_address(40);
+ case 40: return __builtin_frame_address(41);
+ case 41: return __builtin_frame_address(42);
+ case 42: return __builtin_frame_address(43);
+ case 43: return __builtin_frame_address(44);
+ case 44: return __builtin_frame_address(45);
+ case 45: return __builtin_frame_address(46);
+ case 46: return __builtin_frame_address(47);
+ case 47: return __builtin_frame_address(48);
+ case 48: return __builtin_frame_address(49);
+ case 49: return __builtin_frame_address(50);
+ case 50: return __builtin_frame_address(51);
+ case 51: return __builtin_frame_address(52);
+ case 52: return __builtin_frame_address(53);
+ case 53: return __builtin_frame_address(54);
+ case 54: return __builtin_frame_address(55);
+ case 55: return __builtin_frame_address(56);
+ case 56: return __builtin_frame_address(57);
+ case 57: return __builtin_frame_address(58);
+ case 58: return __builtin_frame_address(59);
+ case 59: return __builtin_frame_address(60);
+ case 60: return __builtin_frame_address(61);
+ case 61: return __builtin_frame_address(62);
+ case 62: return __builtin_frame_address(63);
+ case 63: return __builtin_frame_address(64);
+ case 64: return __builtin_frame_address(65);
+ case 65: return __builtin_frame_address(66);
+ case 66: return __builtin_frame_address(67);
+ case 67: return __builtin_frame_address(68);
+ case 68: return __builtin_frame_address(69);
+ case 69: return __builtin_frame_address(70);
+ case 70: return __builtin_frame_address(71);
+ case 71: return __builtin_frame_address(72);
+ case 72: return __builtin_frame_address(73);
+ case 73: return __builtin_frame_address(74);
+ case 74: return __builtin_frame_address(75);
+ case 75: return __builtin_frame_address(76);
+ case 76: return __builtin_frame_address(77);
+ case 77: return __builtin_frame_address(78);
+ case 78: return __builtin_frame_address(79);
+ case 79: return __builtin_frame_address(80);
+ case 80: return __builtin_frame_address(81);
+ case 81: return __builtin_frame_address(82);
+ case 82: return __builtin_frame_address(83);
+ case 83: return __builtin_frame_address(84);
+ case 84: return __builtin_frame_address(85);
+ case 85: return __builtin_frame_address(86);
+ case 86: return __builtin_frame_address(87);
+ case 87: return __builtin_frame_address(88);
+ case 88: return __builtin_frame_address(89);
+ case 89: return __builtin_frame_address(90);
+ case 90: return __builtin_frame_address(91);
+ case 91: return __builtin_frame_address(92);
+ case 92: return __builtin_frame_address(93);
+ case 93: return __builtin_frame_address(94);
+ case 94: return __builtin_frame_address(95);
+ case 95: return __builtin_frame_address(96);
+ case 96: return __builtin_frame_address(97);
+ case 97: return __builtin_frame_address(98);
+ case 98: return __builtin_frame_address(99);
+ case 99: return __builtin_frame_address(100);
+ case 100: return __builtin_frame_address(101);
+ case 101: return __builtin_frame_address(102);
+ case 102: return __builtin_frame_address(103);
+ case 103: return __builtin_frame_address(104);
+ case 104: return __builtin_frame_address(105);
+ case 105: return __builtin_frame_address(106);
+ case 106: return __builtin_frame_address(107);
+ case 107: return __builtin_frame_address(108);
+ case 108: return __builtin_frame_address(109);
+ case 109: return __builtin_frame_address(110);
+ case 110: return __builtin_frame_address(111);
+ case 111: return __builtin_frame_address(112);
+ case 112: return __builtin_frame_address(113);
+ case 113: return __builtin_frame_address(114);
+ case 114: return __builtin_frame_address(115);
+ case 115: return __builtin_frame_address(116);
+ case 116: return __builtin_frame_address(117);
+ case 117: return __builtin_frame_address(118);
+ case 118: return __builtin_frame_address(119);
+ case 119: return __builtin_frame_address(120);
+ case 120: return __builtin_frame_address(121);
+ case 121: return __builtin_frame_address(122);
+ case 122: return __builtin_frame_address(123);
+ case 123: return __builtin_frame_address(124);
+ case 124: return __builtin_frame_address(125);
+ case 125: return __builtin_frame_address(126);
+ case 126: return __builtin_frame_address(127);
+ case 127: return __builtin_frame_address(128);
+ default: return NULL;
+ }
+}
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