PHP: move grpc_init to PHP_RINIT

src/php/ext/grpc/channel_credentials.c

@@ -144,6 +144,8 @@ PHP_METHOD(ChannelCredentials, createSsl) {
 
   pem_key_cert_pair.private_key = pem_key_cert_pair.cert_chain = NULL;
 
+  grpc_set_ssl_roots_override_callback(get_ssl_roots_override);
+
   /* "|s!s!s!" == 3 optional nullable strings */
   if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s!s!s!",
                             &pem_root_certs, &root_certs_length,
@@ -172,6 +174,8 @@ PHP_METHOD(ChannelCredentials, createComposite) {
   zval *cred1_obj;
   zval *cred2_obj;
 
+  grpc_set_ssl_roots_override_callback(get_ssl_roots_override);
+
   /* "OO" == 2 Objects */
   if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "OO", &cred1_obj,
                             grpc_ce_channel_credentials, &cred2_obj,
@@ -238,7 +242,6 @@ void grpc_init_channel_credentials(TSRMLS_D) {
   zend_class_entry ce;
   INIT_CLASS_ENTRY(ce, "Grpc\\ChannelCredentials",
                    channel_credentials_methods);
-  grpc_set_ssl_roots_override_callback(get_ssl_roots_override);
   ce.create_object = create_wrapped_grpc_channel_credentials;
   grpc_ce_channel_credentials = zend_register_internal_class(&ce TSRMLS_CC);
   PHP_GRPC_INIT_HANDLER(wrapped_grpc_channel_credentials,

src/php/ext/grpc/php_grpc.c

@@ -49,7 +49,8 @@
 #include <ext/standard/info.h>
 #include "php_grpc.h"
 
-// ZEND_DECLARE_MODULE_GLOBALS(grpc)
+ZEND_DECLARE_MODULE_GLOBALS(grpc)
+static PHP_GINIT_FUNCTION(grpc);
 
 /* {{{ grpc_functions[]
  *
@@ -70,13 +71,17 @@ zend_module_entry grpc_module_entry = {
   grpc_functions,
   PHP_MINIT(grpc),
   PHP_MSHUTDOWN(grpc),
-  NULL,
+  PHP_RINIT(grpc),
   NULL,
   PHP_MINFO(grpc),
 #if ZEND_MODULE_API_NO >= 20010901
   PHP_GRPC_VERSION,
 #endif
-  STANDARD_MODULE_PROPERTIES};
+  PHP_MODULE_GLOBALS(grpc),
+  PHP_GINIT(grpc),
+  NULL,
+  NULL,
+  STANDARD_MODULE_PROPERTIES_EX};
 /* }}} */
 
 #ifdef COMPILE_DL_GRPC
@@ -114,7 +119,6 @@ PHP_MINIT_FUNCTION(grpc) {
      REGISTER_INI_ENTRIES();
   */
   /* Register call error constants */
-  grpc_init();
   REGISTER_LONG_CONSTANT("Grpc\\CALL_OK", GRPC_CALL_OK,
                          CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\CALL_ERROR", GRPC_CALL_ERROR,
@@ -242,7 +246,6 @@ PHP_MINIT_FUNCTION(grpc) {
   grpc_init_channel_credentials(TSRMLS_C);
   grpc_init_call_credentials(TSRMLS_C);
   grpc_init_server_credentials(TSRMLS_C);
-  grpc_php_init_completion_queue(TSRMLS_C);
   return SUCCESS;
 }
 /* }}} */
@@ -255,9 +258,12 @@ PHP_MSHUTDOWN_FUNCTION(grpc) {
   */
   // WARNING: This function IS being called by PHP when the extension
   // is unloaded but the logs were somehow suppressed.
-  grpc_shutdown_timeval(TSRMLS_C);
-  grpc_php_shutdown_completion_queue(TSRMLS_C);
-  grpc_shutdown();
+  if (GRPC_G(initialized)) {
+    grpc_shutdown_timeval(TSRMLS_C);
+    grpc_php_shutdown_completion_queue(TSRMLS_C);
+    grpc_shutdown();
+    GRPC_G(initialized) = 0;
+  }
   return SUCCESS;
 }
 /* }}} */
@@ -274,6 +280,26 @@ PHP_MINFO_FUNCTION(grpc) {
   */
 }
 /* }}} */
+
+/* {{{ PHP_RINIT_FUNCTION
+ */
+PHP_RINIT_FUNCTION(grpc) {
+  if (!GRPC_G(initialized)) {
+    grpc_init();
+    grpc_php_init_completion_queue(TSRMLS_C);
+    GRPC_G(initialized) = 1;
+  }
+  return SUCCESS;
+}
+/* }}} */
+
+/* {{{ PHP_GINIT_FUNCTION
+ */
+static PHP_GINIT_FUNCTION(grpc) {
+  grpc_globals->initialized = 0;
+}
+/* }}} */
+
 /* The previous line is meant for vim and emacs, so it can correctly fold and
    unfold functions in source code. See the corresponding marks just before
    function definition, where the functions purpose is also documented. Please

src/php/ext/grpc/php_grpc.h

@@ -64,14 +64,16 @@ PHP_MINIT_FUNCTION(grpc);
 PHP_MSHUTDOWN_FUNCTION(grpc);
 /* Displays information about the module */
 PHP_MINFO_FUNCTION(grpc);
+/* Code that runs at request start */
+PHP_RINIT_FUNCTION(grpc);
 
 /*
   Declare any global variables you may need between the BEGIN
   and END macros here:
-
+*/
 ZEND_BEGIN_MODULE_GLOBALS(grpc)
+  zend_bool initialized;
 ZEND_END_MODULE_GLOBALS(grpc)
-*/
 
 /* In every utility function you add that needs to use variables
    in php_grpc_globals, call TSRMLS_FETCH(); after declaring other