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Use V8_OS_* variables for platform detection in the sampler code

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BUG=None
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/23591006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16415 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
yurys@chromium.org 2013-08-29 09:56:30 +00:00
parent 5659e7c84e
commit 82590dd542
1 changed files with 20 additions and 22 deletions
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42
src/sampler.cc
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@ -27,9 +27,7 @@
#include "sampler.h"
#if defined(__linux__) || defined(__FreeBSD__) || defined(__OpenBSD__) \
|| defined(__NetBSD__) || defined(__sun) || defined(__ANDROID__) \
|| defined(__native_client__) || defined(__MACH__)
#if V8_OS_POSIX && !V8_OS_CYGWIN
#define USE_SIGNALS
@ -39,24 +37,24 @@
#include <sys/time.h>
#include <sys/syscall.h>
#if defined(__MACH__)
#if V8_OS_MACOSX
#include <mach/mach.h>
// OpenBSD doesn't have <ucontext.h>. ucontext_t lives in <signal.h>
// and is a typedef for struct sigcontext. There is no uc_mcontext.
#elif(!defined(__ANDROID__) || defined(__BIONIC_HAVE_UCONTEXT_T)) \
&& !defined(__OpenBSD__)
#elif(!V8_OS_ANDROID || defined(__BIONIC_HAVE_UCONTEXT_T)) \
&& !V8_OS_OPENBSD
#include <ucontext.h>
#endif
#include <unistd.h>
// GLibc on ARM defines mcontext_t has a typedef for 'struct sigcontext'.
// Old versions of the C library <signal.h> didn't define the type.
#if defined(__ANDROID__) && !defined(__BIONIC_HAVE_UCONTEXT_T) && \
#if V8_OS_ANDROID && !defined(__BIONIC_HAVE_UCONTEXT_T) && \
defined(__arm__) && !defined(__BIONIC_HAVE_STRUCT_SIGCONTEXT)
#include <asm/sigcontext.h>
#endif
#elif defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__)
#elif V8_OS_WIN || V8_OS_CYGWIN
#include "win32-headers.h"
@ -74,7 +72,7 @@
#include "vm-state-inl.h"
#if defined(__ANDROID__) && !defined(__BIONIC_HAVE_UCONTEXT_T)
#if V8_OS_ANDROID && !defined(__BIONIC_HAVE_UCONTEXT_T)
// Not all versions of Android's C library provide ucontext_t.
// Detect this and provide custom but compatible definitions. Note that these
@ -146,7 +144,7 @@ typedef struct ucontext {
enum { REG_EBP = 6, REG_ESP = 7, REG_EIP = 14 };
#endif
#endif // __ANDROID__ && !defined(__BIONIC_HAVE_UCONTEXT_T)
#endif // V8_OS_ANDROID && !defined(__BIONIC_HAVE_UCONTEXT_T)
namespace v8 {
@ -179,7 +177,7 @@ class Sampler::PlatformData : public PlatformDataCommon {
pthread_t vm_tid_;
};
#elif defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__)
#elif V8_OS_WIN || V8_OS_CYGWIN
// ----------------------------------------------------------------------------
// Win32 profiler support. On Cygwin we use the same sampler implementation as
@ -283,7 +281,7 @@ bool SignalHandler::signal_handler_installed_ = false;
void SignalHandler::HandleProfilerSignal(int signal, siginfo_t* info,
void* context) {
#if defined(__native_client__)
#if V8_OS_NACL
// As Native Client does not support signal handling, profiling
// is disabled.
return;
@ -312,10 +310,10 @@ void SignalHandler::HandleProfilerSignal(int signal, siginfo_t* info,
#else
// Extracting the sample from the context is extremely machine dependent.
ucontext_t* ucontext = reinterpret_cast<ucontext_t*>(context);
#if !defined(__OpenBSD__)
#if !V8_OS_OPENBSD
mcontext_t& mcontext = ucontext->uc_mcontext;
#endif
#if defined(__linux__) || defined(__ANDROID__)
#if V8_OS_LINUX
#if V8_HOST_ARCH_IA32
state.pc = reinterpret_cast<Address>(mcontext.gregs[REG_EIP]);
state.sp = reinterpret_cast<Address>(mcontext.gregs[REG_ESP]);
@ -343,7 +341,7 @@ void SignalHandler::HandleProfilerSignal(int signal, siginfo_t* info,
state.sp = reinterpret_cast<Address>(mcontext.gregs[29]);
state.fp = reinterpret_cast<Address>(mcontext.gregs[30]);
#endif // V8_HOST_ARCH_*
#elif defined(__MACH__)
#elif V8_OS_MACOSX
#if V8_HOST_ARCH_X64
#if __DARWIN_UNIX03
state.pc = reinterpret_cast<Address>(mcontext->__ss.__rip);
@ -365,7 +363,7 @@ void SignalHandler::HandleProfilerSignal(int signal, siginfo_t* info,
state.fp = reinterpret_cast<Address>(mcontext->ss.ebp);
#endif // __DARWIN_UNIX03
#endif // V8_HOST_ARCH_IA32
#elif defined(__FreeBSD__)
#elif V8_OS_FREEBSD
#if V8_HOST_ARCH_IA32
state.pc = reinterpret_cast<Address>(mcontext.mc_eip);
state.sp = reinterpret_cast<Address>(mcontext.mc_esp);
@ -379,7 +377,7 @@ void SignalHandler::HandleProfilerSignal(int signal, siginfo_t* info,
state.sp = reinterpret_cast<Address>(mcontext.mc_r13);
state.fp = reinterpret_cast<Address>(mcontext.mc_r11);
#endif // V8_HOST_ARCH_*
#elif defined(__NetBSD__)
#elif V8_OS_NETBSD
#if V8_HOST_ARCH_IA32
state.pc = reinterpret_cast<Address>(mcontext.__gregs[_REG_EIP]);
state.sp = reinterpret_cast<Address>(mcontext.__gregs[_REG_ESP]);
@ -389,7 +387,7 @@ void SignalHandler::HandleProfilerSignal(int signal, siginfo_t* info,
state.sp = reinterpret_cast<Address>(mcontext.__gregs[_REG_RSP]);
state.fp = reinterpret_cast<Address>(mcontext.__gregs[_REG_RBP]);
#endif // V8_HOST_ARCH_*
#elif defined(__OpenBSD__)
#elif V8_OS_OPENBSD
#if V8_HOST_ARCH_IA32
state.pc = reinterpret_cast<Address>(ucontext->sc_eip);
state.sp = reinterpret_cast<Address>(ucontext->sc_esp);
@ -399,14 +397,14 @@ void SignalHandler::HandleProfilerSignal(int signal, siginfo_t* info,
state.sp = reinterpret_cast<Address>(ucontext->sc_rsp);
state.fp = reinterpret_cast<Address>(ucontext->sc_rbp);
#endif // V8_HOST_ARCH_*
#elif defined(__sun)
#elif V8_OS_SOLARIS
state.pc = reinterpret_cast<Address>(mcontext.gregs[REG_PC]);
state.sp = reinterpret_cast<Address>(mcontext.gregs[REG_SP]);
state.fp = reinterpret_cast<Address>(mcontext.gregs[REG_FP]);
#endif // __sun
#endif // V8_OS_SOLARIS
#endif // USE_SIMULATOR
sampler->SampleStack(state);
#endif // __native_client__
#endif // V8_OS_NACL
}
#endif
@ -624,7 +622,7 @@ void Sampler::DoSample() {
pthread_kill(platform_data()->vm_tid(), SIGPROF);
}
#elif defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__)
#elif V8_OS_WIN || V8_OS_CYGWIN
void Sampler::DoSample() {
HANDLE profiled_thread = platform_data()->profiled_thread();