From 94988a2b4e6bd85ee8216c65cc8cd73d14cf1ad1 Mon Sep 17 00:00:00 2001
From: wolfbeast <mcwerewolf@gmail.com>
Date: Wed, 23 May 2018 20:16:00 +0200
Subject: Remove the jprof profiler.

This resolves #377.
---
 dom/base/nsJSEnvironment.cpp | 109 -------------------------------------------
 1 file changed, 109 deletions(-)

(limited to 'dom/base')

diff --git a/dom/base/nsJSEnvironment.cpp b/dom/base/nsJSEnvironment.cpp
index 576f3052a..3be1a6d2f 100644
--- a/dom/base/nsJSEnvironment.cpp
+++ b/dom/base/nsJSEnvironment.cpp
@@ -1006,110 +1006,6 @@ nsJSContext::AddSupportsPrimitiveTojsvals(nsISupports *aArg, JS::Value *aArgv)
   return NS_OK;
 }
 
-#ifdef MOZ_JPROF
-
-#include <signal.h>
-
-inline bool
-IsJProfAction(struct sigaction *action)
-{
-    return (action->sa_sigaction &&
-            (action->sa_flags & (SA_RESTART | SA_SIGINFO)) == (SA_RESTART | SA_SIGINFO));
-}
-
-void NS_JProfStartProfiling();
-void NS_JProfStopProfiling();
-void NS_JProfClearCircular();
-
-static bool
-JProfStartProfilingJS(JSContext *cx, unsigned argc, JS::Value *vp)
-{
-  NS_JProfStartProfiling();
-  return true;
-}
-
-void NS_JProfStartProfiling()
-{
-    // Figure out whether we're dealing with SIGPROF, SIGALRM, or
-    // SIGPOLL profiling (SIGALRM for JP_REALTIME, SIGPOLL for
-    // JP_RTC_HZ)
-    struct sigaction action;
-
-    // Must check ALRM before PROF since both are enabled for real-time
-    sigaction(SIGALRM, nullptr, &action);
-    //printf("SIGALRM: %p, flags = %x\n",action.sa_sigaction,action.sa_flags);
-    if (IsJProfAction(&action)) {
-        //printf("Beginning real-time jprof profiling.\n");
-        raise(SIGALRM);
-        return;
-    }
-
-    sigaction(SIGPROF, nullptr, &action);
-    //printf("SIGPROF: %p, flags = %x\n",action.sa_sigaction,action.sa_flags);
-    if (IsJProfAction(&action)) {
-        //printf("Beginning process-time jprof profiling.\n");
-        raise(SIGPROF);
-        return;
-    }
-
-    sigaction(SIGPOLL, nullptr, &action);
-    //printf("SIGPOLL: %p, flags = %x\n",action.sa_sigaction,action.sa_flags);
-    if (IsJProfAction(&action)) {
-        //printf("Beginning rtc-based jprof profiling.\n");
-        raise(SIGPOLL);
-        return;
-    }
-
-    printf("Could not start jprof-profiling since JPROF_FLAGS was not set.\n");
-}
-
-static bool
-JProfStopProfilingJS(JSContext *cx, unsigned argc, JS::Value *vp)
-{
-  NS_JProfStopProfiling();
-  return true;
-}
-
-void
-NS_JProfStopProfiling()
-{
-    raise(SIGUSR1);
-    //printf("Stopped jprof profiling.\n");
-}
-
-static bool
-JProfClearCircularJS(JSContext *cx, unsigned argc, JS::Value *vp)
-{
-  NS_JProfClearCircular();
-  return true;
-}
-
-void
-NS_JProfClearCircular()
-{
-    raise(SIGUSR2);
-    //printf("cleared jprof buffer\n");
-}
-
-static bool
-JProfSaveCircularJS(JSContext *cx, unsigned argc, JS::Value *vp)
-{
-  // Not ideal...
-  NS_JProfStopProfiling();
-  NS_JProfStartProfiling();
-  return true;
-}
-
-static const JSFunctionSpec JProfFunctions[] = {
-    JS_FS("JProfStartProfiling",        JProfStartProfilingJS,      0, 0),
-    JS_FS("JProfStopProfiling",         JProfStopProfilingJS,       0, 0),
-    JS_FS("JProfClearCircular",         JProfClearCircularJS,       0, 0),
-    JS_FS("JProfSaveCircular",          JProfSaveCircularJS,        0, 0),
-    JS_FS_END
-};
-
-#endif /* defined(MOZ_JPROF) */
-
 nsresult
 nsJSContext::InitClasses(JS::Handle<JSObject*> aGlobalObj)
 {
@@ -1121,11 +1017,6 @@ nsJSContext::InitClasses(JS::Handle<JSObject*> aGlobalObj)
   // Attempt to initialize profiling functions
   ::JS_DefineProfilingFunctions(cx, aGlobalObj);
 
-#ifdef MOZ_JPROF
-  // Attempt to initialize JProf functions
-  ::JS_DefineFunctions(cx, aGlobalObj, JProfFunctions);
-#endif
-
   return NS_OK;
 }
 
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