Experimental sampling profiler for PHP 7 inspired by rbspy.
For now, Linux x86_64 only, non-ZTS PHP 7 only.
$ make phpspy_libdw # Get addr via libdw (default) (requires libdw-dev or elfutils-devel)
$ make phpspy_readelf # Get addr via readelf binary (requires elfutils)
$ USE_ZEND=1 make ... # Use Zend structs instead of built-in structs (requires php-dev or php-devel)
$ make
cc -Wall -Wextra -g -I. -DUSE_LIBDW=1 phpspy.c -o phpspy -ldw
$ ./phpspy -h
Usage: phpspy -h(help) -p<pid> -s<sleep_us> -n<max_stack_depth> -x<executor_globals_addr>
$ php -r 'sleep(120);' &
[1] 28586
$ sudo ./phpspy -p 28586
0 sleep <internal>:-1
1 <main> <internal>:-1
...
$ sudo ./phpspy -p $(pgrep httpd)
0 Memcached::get <internal>:-1
1 Cache_MemcachedToggleable::get /foo/bar/lib/Cache/MemcachedToggleable.php:26
2 Cache_Memcached::get /foo/bar/lib/Cache/Memcached.php:251
3 IpDb_CacheBase::getFromCache /foo/bar/lib/IpDb/CacheBase.php:165
4 IpDb_CacheBase::get /foo/bar/lib/IpDb/CacheBase.php:107
5 IpDb_CacheBase::contains /foo/bar/lib/IpDb/CacheBase.php:70
6 IpDb_Botnet::has /foo/bar/lib/IpDb/Botnet.php:32
7 Security_Rule_IpAddr::__construct /foo/bar/lib/Security/Rule/IpAddr.php:53
8 Security_Rule_HttpRequestContext::initVariables /foo/bar/lib/Security/Rule/HttpRequestContext.php:22
9 Security_Rule_Context::__construct /foo/bar/lib/Security/Rule/Context.php:44
10 Security_Rule_Engine::getContextByName /foo/bar/lib/Security/Rule/Engine.php:225
11 Security_Rule_Engine::getContextByLocation /foo/bar/lib/Security/Rule/Engine.php:210
12 Security_Rule_Engine::evaluateActionRules /foo/bar/lib/Security/Rule/Engine.php:116
13 <main> /foo/bar/lib/bootstrap/api.php:49
14 <main> /foo/bar/htdocs/v3/public.php:5
...
- Add option to specify sample rate in hertz instead of micro-sec
- Add option to grab
$_SERVER[...]variables along with stack frame - Add option to exit when pid no longer exists
- Add aggregate mode
- Add
make installrule - Add tests