johnmccutchan@google.com
919dc2d6eb
* Threads can only register and unregister themselves with ThreadInterrupter. * Profiler is no longer involved in interrupting threads. It's just a callback and the buffer. * Profiler operates lock free using an atomic operation to reserve sample in sample buffer. * Linux, Mac, and Windows done. R=asiva@google.com Review URL: https://codereview.chromium.org//109803002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@31170 260f80e4-7a28-3924-810f-c04153c831b5
85 lines
2.4 KiB
C++
85 lines
2.4 KiB
C++
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/globals.h"
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#include "vm/simulator.h"
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#include "vm/signal_handler.h"
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#if defined(TARGET_OS_MACOS)
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namespace dart {
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uintptr_t SignalHandler::GetProgramCounter(const mcontext_t& mcontext) {
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uintptr_t pc = 0;
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#if defined(TARGET_ARCH_IA32)
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pc = static_cast<uintptr_t>(mcontext->__ss.__eip);
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#elif defined(TARGET_ARCH_X64)
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pc = static_cast<uintptr_t>(mcontext->__ss.__rip);
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#elif defined(TARGET_ARCH_MIPS) && defined(USING_SIMULATOR)
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pc = static_cast<uintptr_t>(mcontext->__ss.__eip);
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#elif defined(TARGET_ARCH_ARM) && defined(USING_SIMULATOR)
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pc = static_cast<uintptr_t>(mcontext->__ss.__eip);
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#else
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UNIMPLEMENTED();
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#endif // TARGET_ARCH_...
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return pc;
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}
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uintptr_t SignalHandler::GetFramePointer(const mcontext_t& mcontext) {
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uintptr_t fp = 0;
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#if defined(TARGET_ARCH_IA32)
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fp = static_cast<uintptr_t>(mcontext->__ss.__ebp);
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#elif defined(TARGET_ARCH_X64)
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fp = static_cast<uintptr_t>(mcontext->__ss.__rbp);
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#elif defined(TARGET_ARCH_MIPS) && defined(USING_SIMULATOR)
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fp = static_cast<uintptr_t>(mcontext->__ss.__ebp);
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#elif defined(TARGET_ARCH_ARM) && defined(USING_SIMULATOR)
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fp = static_cast<uintptr_t>(mcontext->__ss.__ebp);
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#else
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UNIMPLEMENTED();
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#endif // TARGET_ARCH_...
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return fp;
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}
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uintptr_t SignalHandler::GetStackPointer(const mcontext_t& mcontext) {
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uintptr_t sp = 0;
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#if defined(TARGET_ARCH_IA32)
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sp = static_cast<uintptr_t>(mcontext->__ss.__esp);
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#elif defined(TARGET_ARCH_X64)
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sp = static_cast<uintptr_t>(mcontext->__ss.__rsp);
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#elif defined(TARGET_ARCH_MIPS) && defined(USING_SIMULATOR)
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sp = static_cast<uintptr_t>(mcontext->__ss.__esp);
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#elif defined(TARGET_ARCH_ARM) && defined(USING_SIMULATOR)
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sp = static_cast<uintptr_t>(mcontext->__ss.__esp);
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#else
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UNIMPLEMENTED();
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#endif // TARGET_ARCH_...
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return sp;
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}
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void SignalHandler::Install(SignalAction action) {
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struct sigaction act;
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act.sa_handler = NULL;
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act.sa_sigaction = action;
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sigemptyset(&act.sa_mask);
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act.sa_flags = SA_RESTART | SA_SIGINFO;
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// TODO(johnmccutchan): Do we care about restoring the signal handler?
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struct sigaction old_act;
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int r = sigaction(SIGPROF, &act, &old_act);
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ASSERT(r == 0);
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}
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} // namespace dart
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#endif // defined(TARGET_OS_MACOS)
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