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Allow FCGI worker processes to have CPU and RAM limits imposed #66

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Allow FCGI worker processes to have CPU and RAM limits imposed #66

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37 changes: 37 additions & 0 deletions sapi/cgi/cgi_main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -116,6 +116,10 @@ static int exit_signal = 0;
/* Is Parent waiting for children to exit */
static int parent_waiting = 0;

/* CPU seconds and memory limits for worker processes */
static int rlimit_cpu = 0;
static int rlimit_as = 0;

/**
* Process group
*/
Expand Down Expand Up @@ -1469,6 +1473,22 @@ static zend_module_entry cgi_module_entry = {
STANDARD_MODULE_PROPERTIES
};

void set_worker_rlimits(void)
{
struct rlimit rlim;

if (rlimit_cpu > 0) {
rlim.rlim_cur = rlimit_cpu;
rlim.rlim_max = rlimit_cpu;
setrlimit(RLIMIT_CPU, &rlim);
}
if (rlimit_as > 0) {
rlim.rlim_cur = rlimit_as;
rlim.rlim_max = rlimit_as;
setrlimit(RLIMIT_AS, &rlim);
}
}

/* {{{ main
*/
int main(int argc, char *argv[])
Expand Down Expand Up @@ -1693,6 +1713,22 @@ consult the installation file that came with this distribution, or visit \n\
}
}

if (getenv("PHP_FCGI_RLIMIT_CPU")) {
rlimit_cpu = atoi(getenv("PHP_FCGI_RLIMIT_CPU"));
if (rlimit_cpu < 0) {
fprintf(stderr, "PHP_FCGI_RLIMIT_CPU is not valid\n");
return FAILURE;
}
}

if (getenv("PHP_FCGI_RLIMIT_AS")) {
rlimit_as = atoi(getenv("PHP_FCGI_RLIMIT_AS"));
if (rlimit_as < 0) {
fprintf(stderr, "PHP_FCGI_RLIMIT_AS is not valid\n");
return FAILURE;
}
}

/* make php call us to get _ENV vars */
php_php_import_environment_variables = php_import_environment_variables;
php_import_environment_variables = cgi_php_import_environment_variables;
Expand Down Expand Up @@ -1761,6 +1797,7 @@ consult the installation file that came with this distribution, or visit \n\
sigaction(SIGTERM, &old_term, 0);
sigaction(SIGQUIT, &old_quit, 0);
sigaction(SIGINT, &old_int, 0);
set_worker_rlimits();
break;
case -1:
perror("php (pre-forking)");
Expand Down