From: Dmitry Stogov <dmitry@zend.com>
Date: Fri, 18 Nov 2016 09:23:10 +0000 (+0300)
Subject: Introduced zend.enable_dtrace INI directive to enable/disable PHP call tracing
X-Git-Tag: php-7.1.0~3^2~14
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=01239b0effbc1839aca6d03cdd4c3a0c1a509798;p=php

Introduced zend.enable_dtrace INI directive to enable/disable PHP call tracing
---

diff --git a/NEWS b/NEWS
index 94826541fd..a96d1c61ac 100644
--- a/NEWS
+++ b/NEWS
@@ -8,6 +8,10 @@ PHP                                                                        NEWS
 - Date:
   . Fixed bug #69587 (DateInterval properties and isset). (jhdxr)
 
+- DTrace
+  . Introduced zend.enable_dtrace INI directive to enable/disable PHP
+    call tracing. It's disabled by default. (Dmitry)
+
 - Mbstring:
   . Fixed bug #73532 (Null pointer dereference in mb_eregi). (Laruence)
 
diff --git a/Zend/zend.c b/Zend/zend.c
index 12801c8b70..8d221e82aa 100644
--- a/Zend/zend.c
+++ b/Zend/zend.c
@@ -134,6 +134,9 @@ ZEND_INI_BEGIN()
  	STD_ZEND_INI_BOOLEAN("zend.multibyte", "0", ZEND_INI_PERDIR, OnUpdateBool, multibyte,      zend_compiler_globals, compiler_globals)
  	ZEND_INI_ENTRY("zend.script_encoding",			NULL,		ZEND_INI_ALL,		OnUpdateScriptEncoding)
  	STD_ZEND_INI_BOOLEAN("zend.detect_unicode",			"1",	ZEND_INI_ALL,		OnUpdateBool, detect_unicode, zend_compiler_globals, compiler_globals)
+#if HAVE_DTRACE
+	STD_ZEND_INI_BOOLEAN("zend.enable_dtrace",			"0",	ZEND_INI_SYSTEM,	OnUpdateBool, dtrace_enable,  zend_executor_globals, executor_globals)
+#endif
 #ifdef ZEND_SIGNALS
 	STD_ZEND_INI_BOOLEAN("zend.signal_check", "0", ZEND_INI_SYSTEM, OnUpdateBool, check, zend_signal_globals_t, zend_signal_globals)
 #endif
@@ -691,16 +694,9 @@ int zend_startup(zend_utility_functions *utility_functions, char **extensions) /
 
 	zend_interrupt_function = NULL;
 
-#if HAVE_DTRACE
-/* build with dtrace support */
-	zend_compile_file = dtrace_compile_file;
-	zend_execute_ex = dtrace_execute_ex;
-	zend_execute_internal = dtrace_execute_internal;
-#else
 	zend_compile_file = compile_file;
 	zend_execute_ex = execute_ex;
 	zend_execute_internal = NULL;
-#endif /* HAVE_SYS_SDT_H */
 	zend_compile_string = compile_string;
 	zend_throw_exception_hook = NULL;
 
@@ -826,6 +822,14 @@ void zend_post_startup(void) /* {{{ */
 #else
 	virtual_cwd_deactivate();
 #endif
+#if HAVE_DTRACE
+	/* build with dtrace support */
+	if (EG(dtrace_enable)) {
+		zend_compile_file = dtrace_compile_file;
+		zend_execute_ex = dtrace_execute_ex;
+		zend_execute_internal = dtrace_execute_internal;
+	}
+#endif
 }
 /* }}} */
 
diff --git a/Zend/zend_globals.h b/Zend/zend_globals.h
index fbbf503c41..4609c26374 100644
--- a/Zend/zend_globals.h
+++ b/Zend/zend_globals.h
@@ -217,6 +217,10 @@ struct _zend_executor_globals {
 	zend_bool active;
 	zend_bool valid_symbol_table;
 
+#if HAVE_DTRACE
+	zend_bool dtrace_enable;
+#endif
+
 	zend_long assertions;
 
 	uint32_t           ht_iterators_count;     /* number of allocatd slots */