# stap -l 'process.provider("php").mark("*")' -c 'sapi/cli/php -i'This can also be archived by:stap -l 'process("sapi/cli/php").mark("*")'And, no need to be root to run this command.
Auf einigen Linux-Distributionen kann das Tracing-Tool SystemTap verwendet werden, um die statischen DTrace-Sonden von PHP zu überwachen. Diese Möglichkeit steht mit PHP 5.4.20 und PHP 5.5 zur Verfügung.
Installieren des SystemTap-SDT-Entwicklungspakets:
# yum install systemtap-sdt-devel
Installieren von PHP mit aktivierten DTrace-Sonden:
# ./configure --enable-dtrace ... # make
Die statischen Sonden in PHP können mittels stap aufgelistet werden:
# stap -l 'process.provider("php").mark("*")' -c 'sapi/cli/php -i'
This outputs:
process("sapi/cli/php").provider("php").mark("compile__file__entry")
process("sapi/cli/php").provider("php").mark("compile__file__return")
process("sapi/cli/php").provider("php").mark("error")
process("sapi/cli/php").provider("php").mark("exception__caught")
process("sapi/cli/php").provider("php").mark("exception__thrown")
process("sapi/cli/php").provider("php").mark("execute__entry")
process("sapi/cli/php").provider("php").mark("execute__return")
process("sapi/cli/php").provider("php").mark("function__entry")
process("sapi/cli/php").provider("php").mark("function__return")
process("sapi/cli/php").provider("php").mark("request__shutdown")
process("sapi/cli/php").provider("php").mark("request__startup")
Beispiel #1 all_probes.stp - Verfolgung aller statischen PHP-Sonden mit SystemTap
probe process("sapi/cli/php").provider("php").mark("compile__file__entry") {
printf("Probe compile__file__entry\n");
printf(" compile_file %s\n", user_string($arg1));
printf(" compile_file_translated %s\n", user_string($arg2));
}
probe process("sapi/cli/php").provider("php").mark("compile__file__return") {
printf("Probe compile__file__return\n");
printf(" compile_file %s\n", user_string($arg1));
printf(" compile_file_translated %s\n", user_string($arg2));
}
probe process("sapi/cli/php").provider("php").mark("error") {
printf("Probe error\n");
printf(" errormsg %s\n", user_string($arg1));
printf(" request_file %s\n", user_string($arg2));
printf(" lineno %d\n", $arg3);
}
probe process("sapi/cli/php").provider("php").mark("exception__caught") {
printf("Probe exception__caught\n");
printf(" classname %s\n", user_string($arg1));
}
probe process("sapi/cli/php").provider("php").mark("exception__thrown") {
printf("Probe exception__thrown\n");
printf(" classname %s\n", user_string($arg1));
}
probe process("sapi/cli/php").provider("php").mark("execute__entry") {
printf("Probe execute__entry\n");
printf(" request_file %s\n", user_string($arg1));
printf(" lineno %d\n", $arg2);
}
probe process("sapi/cli/php").provider("php").mark("execute__return") {
printf("Probe execute__return\n");
printf(" request_file %s\n", user_string($arg1));
printf(" lineno %d\n", $arg2);
}
probe process("sapi/cli/php").provider("php").mark("function__entry") {
printf("Probe function__entry\n");
printf(" function_name %s\n", user_string($arg1));
printf(" request_file %s\n", user_string($arg2));
printf(" lineno %d\n", $arg3);
printf(" classname %s\n", user_string($arg4));
printf(" scope %s\n", user_string($arg5));
}
probe process("sapi/cli/php").provider("php").mark("function__return") {
printf("Probe function__return: %s\n", user_string($arg1));
printf(" function_name %s\n", user_string($arg1));
printf(" request_file %s\n", user_string($arg2));
printf(" lineno %d\n", $arg3);
printf(" classname %s\n", user_string($arg4));
printf(" scope %s\n", user_string($arg5));
}
probe process("sapi/cli/php").provider("php").mark("request__shutdown") {
printf("Probe request__shutdown\n");
printf(" file %s\n", user_string($arg1));
printf(" request_uri %s\n", user_string($arg2));
printf(" request_method %s\n", user_string($arg3));
}
probe process("sapi/cli/php").provider("php").mark("request__startup") {
printf("Probe request__startup\n");
printf(" file %s\n", user_string($arg1));
printf(" request_uri %s\n", user_string($arg2));
printf(" request_method %s\n", user_string($arg3));
}
Das obige Skript verfolgt während der gesamten Dauer eines laufenden PHP-Skripts alle statischen Sondenpunkte des PHP-Kerns:
# stap -c 'sapi/cli/php test.php' all_probes.stp
# stap -l 'process.provider("php").mark("*")' -c 'sapi/cli/php -i'This can also be archived by:stap -l 'process("sapi/cli/php").mark("*")'And, no need to be root to run this command.