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excimer.c
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/* Copyright 2018 Wikimedia Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <time.h>
#include "php.h"
#include "zend_exceptions.h"
#include "zend_interfaces.h"
#include "ext/spl/spl_exceptions.h"
#if PHP_VERSION_ID < 80400
#include "ext/standard/php_mt_rand.h"
#else
#include "ext/random/php_random.h"
#endif
#include "ext/standard/info.h"
#if PHP_VERSION_ID < 70200
/* For spl_ce_Countable */
#include "ext/spl/spl_iterators.h"
#endif
#include "php_excimer.h"
#include "excimer_timer.h"
#include "excimer_log.h"
#define EXCIMER_OBJ(type, object) \
((type ## _obj*)excimer_check_object(object, XtOffsetOf(type ## _obj, std), &type ## _handlers))
#define EXCIMER_OBJ_Z(type, zval) (Z_TYPE(zval) == IS_OBJECT ? EXCIMER_OBJ(type, Z_OBJ(zval)) : NULL)
#define EXCIMER_OBJ_ZP(type, zval_ptr) EXCIMER_OBJ(type, Z_OBJ_P(zval_ptr))
#define EXCIMER_NEW_OBJECT(type, ce) \
excimer_object_alloc_init(sizeof(type ## _obj), &type ## _handlers, ce)
#define EXCIMER_DEFAULT_PERIOD 0.1
#define EXCIMER_BILLION 1000000000LL
/* {{{ types */
/**
* ExcimerProfiler_obj: underlying storage for ExcimerProfiler
*/
typedef struct {
/** The period which will be used when the timer is next started */
struct timespec period;
/** The initial interval */
struct timespec initial;
/** The event type, either EXCIMER_CPU or EXCIMER_REAL */
zend_long event_type;
/** The currently-attached log */
zval z_log;
/** The flush callback. If this is set, max_samples will also be set. */
zval z_callback;
/** The maximum number of samples in z_log before z_callback is called. */
zend_long max_samples;
/** The timer backend object */
excimer_timer timer;
zend_object std;
} ExcimerProfiler_obj;
/**
* ExcimerLog_iterator: Iterator object returned by get_iterator handler, used
* by foreach.
*/
typedef struct {
/**
* FIXME Iterators use PHP 5 style inheritance. This is actually a
* zend_object header. Maybe it is harmless but it seems dodgy to me,
* should be fixed upstream.
*/
zend_user_iterator intern;
/** Cached (lazy-initialised) value to use for current() */
zval z_current;
/** Current log index */
zend_long index;
} ExcimerLog_iterator;
/**
* ExcimerLog_obj: underlying storage for ExcimerLog
*/
typedef struct {
/** The log backend object */
excimer_log log;
/** The cached value to use for current() */
zval z_current;
/** The current index, for key() etc. */
zend_long iter_entry_index;
zend_object std;
} ExcimerLog_obj;
/**
* ExcimerLogEntry_obj: underlying storage for ExcimerLogEntry
*/
typedef struct {
/**
* The ExcimerLog. Note that this can be a circular reference if
* ExcimerLog_obj.z_current points here.
*/
zval z_log;
/** The index of this entry in the ExcimerLog */
zend_long index;
zend_object std;
} ExcimerLogEntry_obj;
/**
* ExcimerTimer_obj: underlying storage for ExcimerTimer
*/
typedef struct {
/** The timer backend object */
excimer_timer timer;
/** The timer period */
struct timespec period;
/** The initial expiry, or zero to use the period */
struct timespec initial;
/** The event type, EXCIMER_REAL or EXCIMER_CPU */
zend_long event_type;
/** The event function, or null for no callback */
zval z_callback;
zend_object std;
} ExcimerTimer_obj;
/* }}} */
/* {{{ static function declarations */
static void ExcimerProfiler_start(ExcimerProfiler_obj *profiler);
static void ExcimerProfiler_stop(ExcimerProfiler_obj *profiler);
static void ExcimerProfiler_event(zend_long event_count, void *user_data);
static void ExcimerProfiler_flush(ExcimerProfiler_obj *profiler, zval *zp_old_log);
static zend_object *ExcimerProfiler_new(zend_class_entry *ce);
static void ExcimerProfiler_free_object(zend_object *object);
static void ExcimerProfiler_dtor(zend_object *object);
static PHP_METHOD(ExcimerProfiler, setPeriod);
static PHP_METHOD(ExcimerProfiler, setEventType);
static PHP_METHOD(ExcimerProfiler, setMaxDepth);
static PHP_METHOD(ExcimerProfiler, setFlushCallback);
static PHP_METHOD(ExcimerProfiler, clearFlushCallback);
static PHP_METHOD(ExcimerProfiler, start);
static PHP_METHOD(ExcimerProfiler, stop);
static PHP_METHOD(ExcimerProfiler, getLog);
static PHP_METHOD(ExcimerProfiler, flush);
static zend_object *ExcimerLog_new(zend_class_entry *ce);
static void ExcimerLog_free_object(zend_object *object);
static zend_object_iterator *ExcimerLog_get_iterator(zend_class_entry *ce, zval *object, int by_ref);
#if PHP_VERSION_ID < 80000
static int ExcimerLog_count_elements(zval *zp_log, zend_long *lp_count);
#else
static int ExcimerLog_count_elements(zend_object *object, zend_long *lp_count);
#endif
static void ExcimerLog_init_entry(zval *zp_dest, zval *zp_log, zend_long index);
static void ExcimerLog_iterator_dtor(zend_object_iterator *iter);
static int ExcimerLog_iterator_valid(zend_object_iterator *iter);
static zval *ExcimerLog_iterator_get_current_data(zend_object_iterator *iter);
static void ExcimerLog_iterator_get_current_key(zend_object_iterator *iter, zval *key);
static void ExcimerLog_iterator_move_forward(zend_object_iterator *iter);
static void ExcimerLog_iterator_rewind(zend_object_iterator *iter);
static void ExcimerLog_iterator_invalidate_current(zend_object_iterator *iter);
static PHP_METHOD(ExcimerLog, __construct);
static PHP_METHOD(ExcimerLog, formatCollapsed);
static PHP_METHOD(ExcimerLog, getSpeedscopeData);
static PHP_METHOD(ExcimerLog, aggregateByFunction);
static PHP_METHOD(ExcimerLog, getEventCount);
static PHP_METHOD(ExcimerLog, current);
static PHP_METHOD(ExcimerLog, key);
static PHP_METHOD(ExcimerLog, next);
static PHP_METHOD(ExcimerLog, rewind);
static PHP_METHOD(ExcimerLog, valid);
static PHP_METHOD(ExcimerLog, count);
static PHP_METHOD(ExcimerLog, offsetExists);
static PHP_METHOD(ExcimerLog, offsetGet);
static PHP_METHOD(ExcimerLog, offsetSet);
static PHP_METHOD(ExcimerLog, offsetUnset);
static zend_object *ExcimerLogEntry_new(zend_class_entry *ce);
static void ExcimerLogEntry_free_object(zend_object *object);
static PHP_METHOD(ExcimerLogEntry, __construct);
static PHP_METHOD(ExcimerLogEntry, getTimestamp);
static PHP_METHOD(ExcimerLogEntry, getEventCount);
static PHP_METHOD(ExcimerLogEntry, getTrace);
static zend_object *ExcimerTimer_new(zend_class_entry *ce);
static void ExcimerTimer_free_object(zend_object *object);
static PHP_METHOD(ExcimerTimer, setEventType);
static PHP_METHOD(ExcimerTimer, setInterval);
static PHP_METHOD(ExcimerTimer, setPeriod);
static PHP_METHOD(ExcimerTimer, setCallback);
static PHP_METHOD(ExcimerTimer, start);
static PHP_METHOD(ExcimerTimer, stop);
static PHP_METHOD(ExcimerTimer, getTime);
static void ExcimerTimer_start(ExcimerTimer_obj *timer_obj);
static void ExcimerTimer_stop(ExcimerTimer_obj *timer_obj);
static void ExcimerTimer_event(zend_long event_count, void *user_data);
static int ExcimerTimer_set_callback(ExcimerTimer_obj *timer_obj, zval *zp_callback);
static PHP_FUNCTION(excimer_set_timeout);
/* }}} */
static zend_class_entry *ExcimerProfiler_ce;
static zend_class_entry *ExcimerLog_ce;
static zend_class_entry *ExcimerLogEntry_ce;
static zend_class_entry *ExcimerTimer_ce;
static zend_object_handlers ExcimerProfiler_handlers;
static zend_object_handlers ExcimerLog_handlers;
static zend_object_handlers ExcimerLogEntry_handlers;
static zend_object_handlers ExcimerTimer_handlers;
/** {{{ arginfo */
#ifndef ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX
#define ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(name, return_reference, required_num_args, type, allow_null) \
ZEND_BEGIN_ARG_INFO_EX(name, 0, return_reference, required_num_args)
#endif
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerProfiler_setPeriod, 0)
ZEND_ARG_INFO(0, period)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerProfiler_setEventType, 0)
ZEND_ARG_INFO(0, event_type)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerProfiler_setMaxDepth, 0)
ZEND_ARG_INFO(0, max_depth)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerProfiler_setFlushCallback, 0)
ZEND_ARG_INFO(0, callback)
ZEND_ARG_INFO(0, max_samples)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerProfiler_clearFlushCallback, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerProfiler_start, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerProfiler_stop, 0)
ZEND_END_ARG_INFO()
#if PHP_VERSION_ID >= 70200
ZEND_BEGIN_ARG_WITH_RETURN_OBJ_INFO_EX(arginfo_ExcimerProfiler_getLog, 0, 0, ExcimerLog, 0)
#else
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerProfiler_getLog, 0)
#endif
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerProfiler_flush, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerLog___construct, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerLog_formatCollapsed, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerLog_getSpeedscopeData, 0)
ZEND_END_ARG_INFO()
#if PHP_VERSION_ID < 70200
ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO(arginfo_ExcimerLog_aggregateByFunction, IS_ARRAY, NULL, 0)
#else
ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO(arginfo_ExcimerLog_aggregateByFunction, IS_ARRAY, 0)
#endif
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerLog_getEventCount, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_ExcimerLog_current, 0, 0, IS_MIXED, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_ExcimerLog_key, 0, 0, IS_MIXED, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_ExcimerLog_next, 0, 0, IS_VOID, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_ExcimerLog_rewind, 0, 0, IS_VOID, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_ExcimerLog_valid, 0, 0, _IS_BOOL, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_ExcimerLog_count, 0, 0, IS_LONG, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_ExcimerLog_offsetExists, 0, 1, _IS_BOOL, 0)
ZEND_ARG_INFO(0, offset)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_ExcimerLog_offsetGet, 0, 1, IS_MIXED, 0)
ZEND_ARG_INFO(0, offset)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_ExcimerLog_offsetSet, 0, 2, IS_VOID, 0)
ZEND_ARG_INFO(0, offset)
ZEND_ARG_INFO(0, value)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_ExcimerLog_offsetUnset, 0, 1, IS_VOID, 0)
ZEND_ARG_INFO(0, offset)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerLogEntry___construct, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerLogEntry_getTimestamp, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerLogEntry_getEventCount, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerLogEntry_getTrace, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerTimer_setEventType, 0)
ZEND_ARG_INFO(0, event_type)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerTimer_setInterval, 0)
ZEND_ARG_INFO(0, interval)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerTimer_setPeriod, 0)
ZEND_ARG_INFO(0, period)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerTimer_setCallback, 0)
ZEND_ARG_INFO(0, callback)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerTimer_start, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerTimer_stop, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ExcimerTimer_getTime, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_excimer_set_timeout, 0)
ZEND_ARG_INFO(0, callback)
ZEND_ARG_INFO(0, interval)
ZEND_END_ARG_INFO()
/* }}} */
/** {{{ function entries */
static const zend_function_entry ExcimerProfiler_methods[] = {
PHP_ME(ExcimerProfiler, setPeriod, arginfo_ExcimerProfiler_setPeriod, 0)
PHP_ME(ExcimerProfiler, setEventType, arginfo_ExcimerProfiler_setEventType, 0)
PHP_ME(ExcimerProfiler, setMaxDepth, arginfo_ExcimerProfiler_setMaxDepth, 0)
PHP_ME(ExcimerProfiler, setFlushCallback, arginfo_ExcimerProfiler_setFlushCallback, 0)
PHP_ME(ExcimerProfiler, clearFlushCallback, arginfo_ExcimerProfiler_clearFlushCallback, 0)
PHP_ME(ExcimerProfiler, start, arginfo_ExcimerProfiler_start, 0)
PHP_ME(ExcimerProfiler, stop, arginfo_ExcimerProfiler_stop, 0)
PHP_ME(ExcimerProfiler, getLog, arginfo_ExcimerProfiler_getLog, 0)
PHP_ME(ExcimerProfiler, flush, arginfo_ExcimerProfiler_flush, 0)
PHP_FE_END
};
static const zend_function_entry ExcimerLog_methods[] = {
PHP_ME(ExcimerLog, __construct, arginfo_ExcimerLog___construct,
ZEND_ACC_PRIVATE | ZEND_ACC_FINAL)
PHP_ME(ExcimerLog, formatCollapsed, arginfo_ExcimerLog_formatCollapsed, 0)
PHP_ME(ExcimerLog, getSpeedscopeData, arginfo_ExcimerLog_getSpeedscopeData, 0)
PHP_ME(ExcimerLog, aggregateByFunction, arginfo_ExcimerLog_aggregateByFunction, 0)
PHP_ME(ExcimerLog, getEventCount, arginfo_ExcimerLog_getEventCount, 0)
PHP_ME(ExcimerLog, current, arginfo_ExcimerLog_current, 0)
PHP_ME(ExcimerLog, key, arginfo_ExcimerLog_key, 0)
PHP_ME(ExcimerLog, next, arginfo_ExcimerLog_next, 0)
PHP_ME(ExcimerLog, rewind, arginfo_ExcimerLog_rewind, 0)
PHP_ME(ExcimerLog, valid, arginfo_ExcimerLog_valid, 0)
PHP_ME(ExcimerLog, count, arginfo_ExcimerLog_count, 0)
PHP_ME(ExcimerLog, offsetExists, arginfo_ExcimerLog_offsetExists, 0)
PHP_ME(ExcimerLog, offsetGet, arginfo_ExcimerLog_offsetGet, 0)
PHP_ME(ExcimerLog, offsetSet, arginfo_ExcimerLog_offsetSet, 0)
PHP_ME(ExcimerLog, offsetUnset, arginfo_ExcimerLog_offsetUnset, 0)
PHP_FE_END
};
static zend_object_iterator_funcs ExcimerLog_iterator_funcs = {
ExcimerLog_iterator_dtor,
ExcimerLog_iterator_valid,
ExcimerLog_iterator_get_current_data,
ExcimerLog_iterator_get_current_key,
ExcimerLog_iterator_move_forward,
ExcimerLog_iterator_rewind,
ExcimerLog_iterator_invalidate_current
};
static const zend_function_entry ExcimerLogEntry_methods[] = {
PHP_ME(ExcimerLogEntry, __construct, arginfo_ExcimerLogEntry___construct,
ZEND_ACC_PRIVATE | ZEND_ACC_FINAL)
PHP_ME(ExcimerLogEntry, getTimestamp, arginfo_ExcimerLogEntry_getTimestamp, 0)
PHP_ME(ExcimerLogEntry, getEventCount, arginfo_ExcimerLogEntry_getEventCount, 0)
PHP_ME(ExcimerLogEntry, getTrace, arginfo_ExcimerLogEntry_getTrace, 0)
PHP_FE_END
};
static const zend_function_entry ExcimerTimer_methods[] = {
PHP_ME(ExcimerTimer, setEventType, arginfo_ExcimerTimer_setEventType, 0)
PHP_ME(ExcimerTimer, setInterval, arginfo_ExcimerTimer_setInterval, 0)
PHP_ME(ExcimerTimer, setPeriod, arginfo_ExcimerTimer_setPeriod, 0)
PHP_ME(ExcimerTimer, setCallback, arginfo_ExcimerTimer_setCallback, 0)
PHP_ME(ExcimerTimer, start, arginfo_ExcimerTimer_start, 0)
PHP_ME(ExcimerTimer, stop, arginfo_ExcimerTimer_stop, 0)
PHP_ME(ExcimerTimer, getTime, arginfo_ExcimerTimer_getTime, 0)
PHP_FE_END
};
static const zend_function_entry excimer_functions[] = {
PHP_FE(excimer_set_timeout, arginfo_excimer_set_timeout)
PHP_FE_END
};
/* }}} */
/* {{{ INI Settings */
PHP_INI_BEGIN()
PHP_INI_ENTRY("excimer.default_max_depth", "1000", PHP_INI_ALL, NULL)
PHP_INI_END()
/* }}} */
static void *excimer_object_alloc_init(size_t object_size, zend_object_handlers *handlers, zend_class_entry *ce) /* {{{ */
{
#if PHP_VERSION_ID < 70300
char *intern = ecalloc(1, object_size + zend_object_properties_size(ce));
#else
char *intern = zend_object_alloc(object_size, ce);
#endif
const size_t header_size = object_size - sizeof(zend_object);
zend_object *object = (zend_object*)(intern + header_size);
zend_object_std_init(object, ce);
object_properties_init(object, ce);
object->handlers = handlers;
return intern;
}
/* }}} */
static void excimer_set_timespec(struct timespec *dest, double source) /* {{{ */
{
double fractional, integral;
if (source < 0) {
dest->tv_sec = dest->tv_nsec = 0;
return;
}
fractional = modf(source, &integral);
dest->tv_sec = (time_t)integral;
dest->tv_nsec = (long)(fractional * 1000000000.0);
if (dest->tv_nsec >= EXCIMER_BILLION) {
dest->tv_nsec -= EXCIMER_BILLION;
dest->tv_sec ++;
}
}
/* }}} */
static inline uint64_t excimer_timespec_to_ns(struct timespec *ts)
{
return (uint64_t)ts->tv_nsec + (uint64_t)ts->tv_sec * EXCIMER_BILLION;
}
static inline double excimer_timespec_to_double(struct timespec *ts)
{
return excimer_timespec_to_ns(ts) * 1e-9;
}
static inline void* excimer_check_object(zend_object *object, size_t offset, const zend_object_handlers *handlers)
{
if (object->handlers != handlers) {
return NULL;
} else {
return (void*)((char*)object - offset);
}
}
/* {{{ PHP_MINIT_FUNCTION
*/
static PHP_MINIT_FUNCTION(excimer)
{
zend_class_entry ce;
REGISTER_INI_ENTRIES();
REGISTER_LONG_CONSTANT("EXCIMER_REAL", EXCIMER_REAL, CONST_CS | CONST_PERSISTENT);
// Only define EXCIMER_CPU if the current platform supports POSIX timers,
// which are necessary for CPU profiling.
// This allows application code to detect and gracefully handle a lack of CPU profiling support.
#ifdef HAVE_TIMER_CREATE
REGISTER_LONG_CONSTANT("EXCIMER_CPU", EXCIMER_CPU, CONST_CS | CONST_PERSISTENT);
#endif
#define REGISTER_EXCIMER_CLASS(class_name) \
INIT_CLASS_ENTRY(ce, #class_name, class_name ## _methods); \
class_name ## _ce = zend_register_internal_class(&ce); \
class_name ## _ce->create_object = class_name ## _new; \
memcpy(&class_name ## _handlers, zend_get_std_object_handlers(), \
sizeof(zend_object_handlers)); \
class_name ## _handlers.offset = XtOffsetOf(class_name ## _obj, std); \
class_name ## _handlers.free_obj = class_name ## _free_object;
REGISTER_EXCIMER_CLASS(ExcimerProfiler);
ExcimerProfiler_handlers.dtor_obj = ExcimerProfiler_dtor;
REGISTER_EXCIMER_CLASS(ExcimerLog);
ExcimerLog_ce->get_iterator = ExcimerLog_get_iterator;
ExcimerLog_handlers.count_elements = ExcimerLog_count_elements;
zend_class_implements(ExcimerLog_ce, 1, zend_ce_iterator);
#if PHP_VERSION_ID >= 70200
zend_class_implements(ExcimerLog_ce, 1, zend_ce_countable);
zend_class_implements(ExcimerLog_ce, 1, zend_ce_arrayaccess);
#elif defined(HAVE_SPL)
zend_class_implements(ExcimerLog_ce, 1, spl_ce_Countable);
zend_class_implements(ExcimerLog_ce, 1, spl_ce_ArrayAccess);
#endif
REGISTER_EXCIMER_CLASS(ExcimerLogEntry);
REGISTER_EXCIMER_CLASS(ExcimerTimer);
#undef REGISTER_EXCIMER_CLASS
excimer_timer_module_init();
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MSHUTDOWN_FUNCTION
*/
static PHP_MSHUTDOWN_FUNCTION(excimer)
{
UNREGISTER_INI_ENTRIES();
excimer_timer_module_shutdown();
return SUCCESS;
}
/* }}} */
/* {{{ PHP_RINIT_FUNCTION
*/
static PHP_RINIT_FUNCTION(excimer)
{
excimer_timer_thread_init();
return SUCCESS;
}
/* }}} */
/* {{{ ZEND_MODULE_POST_ZEND_DEACTIVATE_D */
static ZEND_MODULE_POST_ZEND_DEACTIVATE_D(excimer)
{
excimer_timer_thread_shutdown();
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MINFO_FUNCTION
*/
static PHP_MINFO_FUNCTION(excimer)
{
php_info_print_table_start();
php_info_print_table_header(2, "excimer support", "enabled");
php_info_print_table_row(2, "excimer version", PHP_EXCIMER_VERSION);
php_info_print_table_end();
DISPLAY_INI_ENTRIES();
}
/* }}} */
static zend_object *ExcimerProfiler_new(zend_class_entry *ce) /* {{{ */
{
ExcimerProfiler_obj *profiler = EXCIMER_NEW_OBJECT(ExcimerProfiler, ce);
ExcimerLog_obj *log_obj;
struct timespec now_ts;
double initial;
clock_gettime(CLOCK_MONOTONIC, &now_ts);
object_init_ex(&profiler->z_log, ExcimerLog_ce);
log_obj = EXCIMER_OBJ_Z(ExcimerLog, profiler->z_log);
log_obj->log.max_depth = INI_INT("excimer.default_max_depth");
log_obj->log.epoch = excimer_timespec_to_ns(&now_ts);
ZVAL_NULL(&profiler->z_callback);
profiler->event_type = EXCIMER_REAL;
// Stagger start time
initial = php_mt_rand() * EXCIMER_DEFAULT_PERIOD / UINT32_MAX;
excimer_set_timespec(&profiler->initial, initial);
excimer_set_timespec(&profiler->period, EXCIMER_DEFAULT_PERIOD);
log_obj->log.period = EXCIMER_DEFAULT_PERIOD * EXCIMER_BILLION;
return &profiler->std;
}
/* }}} */
static void ExcimerProfiler_free_object(zend_object *object) /* {{{ */
{
ExcimerProfiler_obj *profiler = EXCIMER_OBJ(ExcimerProfiler, object);
if (profiler->timer.is_valid) {
excimer_timer_destroy(&profiler->timer);
}
zval_ptr_dtor(&profiler->z_log);
ZVAL_UNDEF(&profiler->z_log);
zval_ptr_dtor(&profiler->z_callback);
ZVAL_UNDEF(&profiler->z_callback);
zend_object_std_dtor(object);
}
/* }}} */
static void ExcimerProfiler_dtor(zend_object *object) /* {{{ */
{
ExcimerProfiler_obj *profiler = EXCIMER_OBJ(ExcimerProfiler, object);
ExcimerLog_obj *log_obj = EXCIMER_OBJ_Z(ExcimerLog, profiler->z_log);
zval z_old_log;
if (log_obj->log.entries_size) {
ExcimerProfiler_flush(profiler, &z_old_log);
zval_ptr_dtor(&z_old_log);
}
}
/* }}} */
/* {{{ proto void ExcimerProfiler::setPeriod(float period)
*/
static PHP_METHOD(ExcimerProfiler, setPeriod)
{
double period, initial;
ExcimerProfiler_obj *profiler = EXCIMER_OBJ_ZP(ExcimerProfiler, getThis());
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_DOUBLE(period)
ZEND_PARSE_PARAMETERS_END();
// Stagger start time
initial = php_mt_rand() * period / UINT32_MAX;
excimer_set_timespec(&profiler->period, period);
excimer_set_timespec(&profiler->initial, initial);
ExcimerLog_obj *log = EXCIMER_OBJ_ZP(ExcimerLog, &profiler->z_log);
log->log.period = period * EXCIMER_BILLION;
}
/* }}} */
/* {{{ proto void ExcimerProfiler::setEventType(int event_type)
*/
static PHP_METHOD(ExcimerProfiler, setEventType)
{
zend_long event_type;
ExcimerProfiler_obj *profiler = EXCIMER_OBJ_ZP(ExcimerProfiler, getThis());
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_LONG(event_type)
ZEND_PARSE_PARAMETERS_END();
if (event_type != EXCIMER_CPU && event_type != EXCIMER_REAL) {
php_error_docref(NULL, E_WARNING, "Invalid event type");
return;
}
profiler->event_type = event_type;
}
/* }}} */
/* {{{ proto void ExcimerProfiler::setMaxDepth(int max_depth)
*/
static PHP_METHOD(ExcimerProfiler, setMaxDepth)
{
zend_long max_depth;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_LONG(max_depth)
ZEND_PARSE_PARAMETERS_END();
ExcimerProfiler_obj *profiler = EXCIMER_OBJ_ZP(ExcimerProfiler, getThis());
ExcimerLog_obj *log_obj = EXCIMER_OBJ_ZP(ExcimerLog, &profiler->z_log);
excimer_log_set_max_depth(&log_obj->log, max_depth);
}
/* }}} */
/* {{{ proto void ExcimerProfiler::setFlushCallback(callable callback, mixed max_samples)
*/
static PHP_METHOD(ExcimerProfiler, setFlushCallback)
{
zval *z_callback;
zend_long max_samples;
ExcimerProfiler_obj *profiler = EXCIMER_OBJ_ZP(ExcimerProfiler, getThis());
char *is_callable_error;
ZEND_PARSE_PARAMETERS_START(2, 2)
Z_PARAM_ZVAL(z_callback)
Z_PARAM_LONG(max_samples)
ZEND_PARSE_PARAMETERS_END();
if (!zend_is_callable_ex(z_callback, NULL, 0, NULL, NULL, &is_callable_error)) {
php_error_docref(NULL, E_WARNING, "flush callback is not callable: %s",
is_callable_error);
return;
}
ZVAL_COPY(&profiler->z_callback, z_callback);
profiler->max_samples = max_samples;
}
/* }}} */
/* {{{ proto void ExcimerProfiler::clearFlushCallback()
*/
static PHP_METHOD(ExcimerProfiler, clearFlushCallback)
{
ExcimerProfiler_obj *profiler = EXCIMER_OBJ_ZP(ExcimerProfiler, getThis());
zval_ptr_dtor(&profiler->z_callback);
ZVAL_NULL(&profiler->z_callback);
profiler->max_samples = 0;
}
/* }}} */
/* {{{ proto void ExcimerProfiler::start()
*/
static PHP_METHOD(ExcimerProfiler, start)
{
ExcimerProfiler_obj *profiler = EXCIMER_OBJ_ZP(ExcimerProfiler, getThis());
ZEND_PARSE_PARAMETERS_START(0, 0);
ZEND_PARSE_PARAMETERS_END();
if (profiler->timer.is_running) {
ExcimerProfiler_stop(profiler);
}
ExcimerProfiler_start(profiler);
}
/* }}} */
/* {{{ proto void ExcimerProfiler::stop()
*/
static PHP_METHOD(ExcimerProfiler, stop)
{
ExcimerProfiler_obj *profiler = EXCIMER_OBJ_ZP(ExcimerProfiler, getThis());
ZEND_PARSE_PARAMETERS_START(0, 0);
ZEND_PARSE_PARAMETERS_END();
ExcimerProfiler_stop(profiler);
}
/* }}} */
/* {{{ proto ExcimerLog ExcimerProfiler::getLog()
*/
static PHP_METHOD(ExcimerProfiler, getLog)
{
ExcimerProfiler_obj * profiler = EXCIMER_OBJ_ZP(ExcimerProfiler, getThis());
ZEND_PARSE_PARAMETERS_START(0, 0);
ZEND_PARSE_PARAMETERS_END();
RETURN_ZVAL(&profiler->z_log, 1, 0);
}
/* }}} */
/* {{{ proto ExcimerLog ExcimerProfiler::flush() */
static PHP_METHOD(ExcimerProfiler, flush)
{
ExcimerProfiler_obj *profiler = EXCIMER_OBJ_ZP(ExcimerProfiler, getThis());
ZEND_PARSE_PARAMETERS_START(0, 0);
ZEND_PARSE_PARAMETERS_END();
ExcimerProfiler_flush(profiler, return_value);
}
/* }}} */
static void ExcimerProfiler_start(ExcimerProfiler_obj *profiler) /* {{{ */
{
if (profiler->timer.is_valid) {
excimer_timer_destroy(&profiler->timer);
}
if (excimer_timer_init(&profiler->timer,
profiler->event_type,
ExcimerProfiler_event,
(void*)profiler) == FAILURE)
{
/* Error message already sent */
return;
}
excimer_timer_start(&profiler->timer,
&profiler->period,
&profiler->initial);
}
/* }}} */
static void ExcimerProfiler_stop(ExcimerProfiler_obj *profiler) /* {{{ */
{
if (profiler->timer.is_valid) {
excimer_timer_destroy(&profiler->timer);
}
}
/* }}} */
static void ExcimerProfiler_event(zend_long event_count, void *user_data) /* {{{ */
{
uint64_t now_ns;
struct timespec now_ts;
ExcimerProfiler_obj *profiler = (ExcimerProfiler_obj*)user_data;
ExcimerLog_obj *log_obj = EXCIMER_OBJ_ZP(ExcimerLog, &profiler->z_log);
excimer_log *log;
log = &log_obj->log;
clock_gettime(CLOCK_MONOTONIC, &now_ts);
now_ns = excimer_timespec_to_ns(&now_ts);
excimer_log_add(log, EG(current_execute_data), event_count, now_ns);
if (profiler->max_samples && log->entries_size >= profiler->max_samples) {
zval z_old_log;
ExcimerProfiler_flush(profiler, &z_old_log);
zval_ptr_dtor(&z_old_log);
}
}
/* }}} */
static void ExcimerProfiler_flush(ExcimerProfiler_obj *profiler, zval *zp_old_log) /* {{{ */
{
ExcimerLog_obj *log_obj = EXCIMER_OBJ_ZP(ExcimerLog, &profiler->z_log);
excimer_log *log = &log_obj->log;
zend_fcall_info fci;
zend_fcall_info_cache fcc;
char *is_callable_error = NULL;
zval retval;
int status;
/* Rotate the log */
ZVAL_COPY(zp_old_log, &profiler->z_log);
Z_DELREF(profiler->z_log);
object_init_ex(&profiler->z_log, ExcimerLog_ce);
excimer_log_copy_options(&EXCIMER_OBJ_ZP(ExcimerLog, &profiler->z_log)->log, log);
if (Z_ISNULL(profiler->z_callback)) {
return;
}
/* Prepare to call the flush callback */
if (zend_fcall_info_init(&profiler->z_callback, 0, &fci, &fcc, NULL,
&is_callable_error) != SUCCESS)
{
php_error(E_WARNING, "ExcimerProfiler callback is not callable (during event): %s",
is_callable_error);
ExcimerProfiler_stop(profiler);
return;
}
fci.retval = &retval;
/* Call it */
zend_fcall_info_argn(&fci, 1, zp_old_log);
status = zend_call_function(&fci, &fcc);
if (status == SUCCESS) {
zval_ptr_dtor(&retval);
}
zend_fcall_info_args_clear(&fci, 1);
}
/* }}} */
static zend_object *ExcimerLog_new(zend_class_entry *ce) /* {{{ */
{
ExcimerLog_obj *log_obj = EXCIMER_NEW_OBJECT(ExcimerLog, ce);
excimer_log_init(&log_obj->log);
/* Lazy-initialise z_current to minimise circular references */
ZVAL_NULL(&log_obj->z_current);
log_obj->iter_entry_index = 0;
return &log_obj->std;
}
/* }}} */
static void ExcimerLog_free_object(zend_object *object) /* {{{ */
{
ExcimerLog_obj *log_obj = EXCIMER_OBJ(ExcimerLog, object);
excimer_log_destroy(&log_obj->log);
zval_ptr_dtor(&log_obj->z_current);
zend_object_std_dtor(object);
}
/* }}} */
/* {{{ ExcimerLog_get_iterator */
static zend_object_iterator *ExcimerLog_get_iterator(
zend_class_entry *ce, zval *zp_log, int by_ref)
{
ExcimerLog_iterator *iterator;
if (by_ref) {
zend_throw_exception(spl_ce_RuntimeException, "An iterator cannot be used with foreach by reference", 0);
return NULL;
}
iterator = emalloc(sizeof(ExcimerLog_iterator));
zend_iterator_init((zend_object_iterator*)iterator);
ZVAL_COPY(&iterator->intern.it.data, zp_log);
iterator->intern.it.funcs = &ExcimerLog_iterator_funcs;
iterator->intern.ce = ce;
iterator->index = 0;
ZVAL_NULL(&iterator->z_current);
return &iterator->intern.it;
}
/* }}} */
static void ExcimerLog_iterator_dtor(zend_object_iterator *iter) /* {{{ */
{
ExcimerLog_iterator *iterator = (ExcimerLog_iterator*)iter;
zval_ptr_dtor(&iterator->z_current);
ZVAL_UNDEF(&iterator->z_current);
zval_ptr_dtor(&iterator->intern.it.data);
ZVAL_UNDEF(&iterator->intern.it.data);
}
/* }}} */
static int ExcimerLog_iterator_valid(zend_object_iterator *iter) /* {{{ */
{
ExcimerLog_iterator *iterator = (ExcimerLog_iterator*)iter;
ExcimerLog_obj *log_obj = EXCIMER_OBJ_Z(ExcimerLog, iterator->intern.it.data);
if (iterator->index < log_obj->log.entries_size) {
return SUCCESS;
} else {
return FAILURE;
}
}
/* }}} */
static zval *ExcimerLog_iterator_get_current_data(zend_object_iterator *iter) /* {{{ */
{
ExcimerLog_iterator *iterator = (ExcimerLog_iterator*)iter;
ExcimerLog_obj *log_obj = EXCIMER_OBJ_Z(ExcimerLog, iterator->intern.it.data);
if (Z_ISNULL(iterator->z_current)) {
if (iterator->index < log_obj->log.entries_size) {
ExcimerLog_init_entry(&iterator->z_current, &iterator->intern.it.data, iterator->index);
} else {
return NULL;
}
}
return &iterator->z_current;
}
/* }}} */
static void ExcimerLog_iterator_get_current_key(zend_object_iterator *iter, zval *key) /* {{{ */
{
ExcimerLog_iterator *iterator = (ExcimerLog_iterator*)iter;
ExcimerLog_obj *log_obj = EXCIMER_OBJ_Z(ExcimerLog, iterator->intern.it.data);
if (iterator->index < log_obj->log.entries_size) {
ZVAL_LONG(key, iterator->index);
} else {
ZVAL_NULL(key);
}
}
/* }}} */
static void ExcimerLog_iterator_move_forward(zend_object_iterator *iter) /* {{{ */