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| author | markus@chromium.org <markus@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2010-03-18 01:05:59 +0000 |
|---|---|---|
| committer | markus@chromium.org <markus@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2010-03-18 01:05:59 +0000 |
| commit | 62dc1f04051694ae381488ef44fad336c6260ad6 (patch) | |
| tree | 52ddd2c05f774115269541940c3bb32ddffba215 /sandbox/linux/seccomp/syscall.cc | |
| parent | ec64212b924d80d3ba5da864812b8dea1132854e (diff) | |
| download | chromium_src-62dc1f04051694ae381488ef44fad336c6260ad6.zip chromium_src-62dc1f04051694ae381488ef44fad336c6260ad6.tar.gz chromium_src-62dc1f04051694ae381488ef44fad336c6260ad6.tar.bz2 | |
Compute and pring the time that it takes to execute system calls. This data
is going to be skewed slightly, as calling gettimeofday() by itself also
takes a little bit of time. But it should be good enough to allow us to see
where we have performance bottlenecks.
TEST=none
BUG=none
Review URL: http://codereview.chromium.org/997009
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@41905 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'sandbox/linux/seccomp/syscall.cc')
| -rw-r--r-- | sandbox/linux/seccomp/syscall.cc | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/sandbox/linux/seccomp/syscall.cc b/sandbox/linux/seccomp/syscall.cc index d3dc7aa..7f431a3 100644 --- a/sandbox/linux/seccomp/syscall.cc +++ b/sandbox/linux/seccomp/syscall.cc @@ -271,19 +271,20 @@ void* Sandbox::defaultSystemCallHandler(int syscallNum, void* arg0, void* arg1, // these system calls are not restricted in Seccomp mode. But depending on // the exact instruction sequence in libc, we might not be able to reliably // filter out these system calls at the time when we instrument the code. - SysCalls sys; - long rc; + SysCalls sys; + long rc; + long long tm; switch (syscallNum) { case __NR_read: - Debug::syscall(syscallNum, "Allowing unrestricted system call"); + Debug::syscall(&tm, syscallNum, "Allowing unrestricted system call"); rc = sys.read((long)arg0, arg1, (size_t)arg2); break; case __NR_write: - Debug::syscall(syscallNum, "Allowing unrestricted system call"); + Debug::syscall(&tm, syscallNum, "Allowing unrestricted system call"); rc = sys.write((long)arg0, arg1, (size_t)arg2); break; case __NR_rt_sigreturn: - Debug::syscall(syscallNum, "Allowing unrestricted system call"); + Debug::syscall(&tm, syscallNum, "Allowing unrestricted system call"); rc = sys.rt_sigreturn((unsigned long)arg0); break; default: @@ -295,7 +296,7 @@ void* Sandbox::defaultSystemCallHandler(int syscallNum, void* arg0, void* arg1, if ((unsigned)syscallNum <= maxSyscall && syscallTable[syscallNum].handler == UNRESTRICTED_SYSCALL) { - Debug::syscall(syscallNum, "Allowing unrestricted system call"); + Debug::syscall(&tm, syscallNum, "Allowing unrestricted system call"); perform_unrestricted: struct { int sysnum; @@ -309,9 +310,10 @@ void* Sandbox::defaultSystemCallHandler(int syscallNum, void* arg0, void* arg1, read(sys, thread, &rc, sizeof(rc)) != sizeof(rc)) { die("Failed to forward unrestricted system call"); } + Debug::elapsed(tm, syscallNum); return rc; } else if (Debug::isEnabled()) { - Debug::syscall(syscallNum, + Debug::syscall(&tm, syscallNum, "In production mode, this call would be disallowed"); goto perform_unrestricted; } else { @@ -321,6 +323,7 @@ void* Sandbox::defaultSystemCallHandler(int syscallNum, void* arg0, void* arg1, if (rc < 0) { rc = -sys.my_errno; } + Debug::elapsed(tm, syscallNum); return (void *)rc; } |