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PHP Version : 5.5.9-1ubuntu4.29
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Current File : /proc/self/root/home/b8009/php-5.6.22/sapi/fpm/fpm/fpm_php_trace.c
	/* $Id: fpm_php_trace.c,v 1.27.2.1 2008/11/15 00:57:24 anight Exp $ */
	/* (c) 2007,2008 Andrei Nigmatulin */

#include "fpm_config.h"

#if HAVE_FPM_TRACE

#include "php.h"
#include "php_main.h"

#include <stdio.h>
#include <stddef.h>
#if HAVE_INTTYPES_H
# include <inttypes.h>
#else
# include <stdint.h>
#endif
#include <unistd.h>
#include <sys/time.h>
#include <sys/types.h>
#include <errno.h>

#include "fpm_trace.h"
#include "fpm_php_trace.h"
#include "fpm_children.h"
#include "fpm_worker_pool.h"
#include "fpm_process_ctl.h"
#include "fpm_scoreboard.h"

#include "zlog.h"


#define valid_ptr(p) ((p) && 0 == ((p) & (sizeof(long) - 1)))

#if SIZEOF_LONG == 4
#define PTR_FMT "08"
#elif SIZEOF_LONG == 8
#define PTR_FMT "016"
#endif


static int fpm_php_trace_dump(struct fpm_child_s *child, FILE *slowlog TSRMLS_DC) /* {{{ */
{
	int callers_limit = 20;
	pid_t pid = child->pid;
	struct timeval tv;
	static const int buf_size = 1024;
	char buf[buf_size];
	long execute_data;
	long l;

	gettimeofday(&tv, 0);

	zlog_print_time(&tv, buf, buf_size);

	fprintf(slowlog, "\n%s [pool %s] pid %d\n", buf, child->wp->config->name, (int) pid);

	if (0 > fpm_trace_get_strz(buf, buf_size, (long) &SG(request_info).path_translated)) {
		return -1;
	}

	fprintf(slowlog, "script_filename = %s\n", buf);

	if (0 > fpm_trace_get_long((long) &EG(current_execute_data), &l)) {
		return -1;
	}

	execute_data = l;

	while (execute_data) {
		long function;
		uint lineno = 0;

		fprintf(slowlog, "[0x%" PTR_FMT "lx] ", execute_data);

		if (0 > fpm_trace_get_long(execute_data + offsetof(zend_execute_data, function_state.function), &l)) {
			return -1;
		}

		function = l;

		if (valid_ptr(function)) {
			if (0 > fpm_trace_get_strz(buf, buf_size, function + offsetof(zend_function, common.function_name))) {
				return -1;
			}

			fprintf(slowlog, "%s()", buf);
		} else {
			fprintf(slowlog, "???");
		}

		if (0 > fpm_trace_get_long(execute_data + offsetof(zend_execute_data, op_array), &l)) {
			return -1;
		}

		*buf = '\0';

		if (valid_ptr(l)) {
			long op_array = l;

			if (0 > fpm_trace_get_strz(buf, buf_size, op_array + offsetof(zend_op_array, filename))) {
				return -1;
			}
		}

		if (0 > fpm_trace_get_long(execute_data + offsetof(zend_execute_data, opline), &l)) {
			return -1;
		}

		if (valid_ptr(l)) {
			long opline = l;
			uint *lu = (uint *) &l;

			if (0 > fpm_trace_get_long(opline + offsetof(struct _zend_op, lineno), &l)) {
				return -1;
			}

			lineno = *lu;
		}

		fprintf(slowlog, " %s:%u\n", *buf ? buf : "unknown", lineno);

		if (0 > fpm_trace_get_long(execute_data + offsetof(zend_execute_data, prev_execute_data), &l)) {
			return -1;
		}

		execute_data = l;

		if (0 == --callers_limit) {
			break;
		}
	}
	return 0;
}
/* }}} */

void fpm_php_trace(struct fpm_child_s *child) /* {{{ */
{
	TSRMLS_FETCH();
	fpm_scoreboard_update(0, 0, 0, 0, 0, 0, 1, FPM_SCOREBOARD_ACTION_INC, child->wp->scoreboard);
	FILE *slowlog;

	zlog(ZLOG_NOTICE, "about to trace %d", (int) child->pid);

	slowlog = fopen(child->wp->config->slowlog, "a+");

	if (!slowlog) {
		zlog(ZLOG_SYSERROR, "unable to open slowlog (%s)", child->wp->config->slowlog);
		goto done0;
	}

	if (0 > fpm_trace_ready(child->pid)) {
		goto done1;
	}

	if (0 > fpm_php_trace_dump(child, slowlog TSRMLS_CC)) {
		fprintf(slowlog, "+++ dump failed\n");
	}

	if (0 > fpm_trace_close(child->pid)) {
		goto done1;
	}

done1:
	fclose(slowlog);

done0:
	fpm_pctl_kill(child->pid, FPM_PCTL_CONT);
	child->tracer = 0;

	zlog(ZLOG_NOTICE, "finished trace of %d", (int) child->pid);
}
/* }}} */

#endif

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