Implement shared libraries logging on Mac OS X, added required support in Tick Processor.

src/platform-macos.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 14 matching lines @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // Platform specific code for MacOS goes here. For the POSIX comaptible parts
 // the implementation is in platform-posix.cc.
 
 #include <ucontext.h>
 #include <unistd.h>
 #include <sys/mman.h>
 #include <mach/mach_init.h>
+#include <mach-o/dyld.h>
+#include <mach-o/getsect.h>
 
 #include <AvailabilityMacros.h>
 
 #include <pthread.h>
 #include <semaphore.h>
 #include <signal.h>
 #include <mach/mach.h>
 #include <mach/semaphore.h>
 #include <mach/task.h>
 #include <sys/time.h>
@@ skipping 153 matching lines @@
 }
 
 
 PosixMemoryMappedFile::~PosixMemoryMappedFile() {
   if (memory_) munmap(memory_, size_);
   fclose(file_);
 }
 
 
 void OS::LogSharedLibraryAddresses() {
-  // TODO(1233579): Implement.
+  unsigned int images_count = _dyld_image_count();
+  for (unsigned int i = 0; i < images_count; ++i) {
+    const mach_header *header = _dyld_get_image_header(i);

[iposva, 2009/07/13 20:18:21]

The correct style is "mach_header* header".

[Mikhail Naganov, 2009/07/14 05:00:42]

Done.

+    if (header == NULL) continue;
+    unsigned int size;
+    char *code_ptr;

[iposva, 2009/07/13 20:18:21]

The correct style is "char* code_ptr".

I also assume that you did not assign at the declaration because that would have
run over the line length?

[Mikhail Naganov, 2009/07/14 05:00:42]

No, it's just a lack of attention. Fixed, thanks!

+    code_ptr = getsectdatafromheader(header, SEG_TEXT, SECT_TEXT, &size);
+    if (code_ptr == NULL) continue;
+    const uintptr_t slide = _dyld_get_image_vmaddr_slide(i);
+    const uintptr_t start = reinterpret_cast<uintptr_t>(code_ptr) + slide;
+    LOG(SharedLibraryEvent(_dyld_get_image_name(i), start, start + size));
+  }
 }
 
 
 double OS::nan_value() {
   return NAN;
 }
 
 
 int OS::ActivationFrameAlignment() {
   // OS X activation frames must be 16 byte-aligned; see "Mac OS X ABI
@@ skipping 386 matching lines @@
 
   // Deallocate Mach port for thread.
   if (IsProfiling()) {
     mach_port_deallocate(data_->task_self_, data_->profiled_thread_);
   }
 }
 
 #endif  // ENABLE_LOGGING_AND_PROFILING
 
 } }  // namespace v8::internal