Add malloc/new profiling on linux

src/main.cpp

 //===- subzero/src/main.cpp - Entry point for bitcode translation ---------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
 /// \brief Defines the entry point for translating PNaCl bitcode into native
 /// code.
 ///
 //===----------------------------------------------------------------------===//
 
 #include "IceBrowserCompileServer.h"
 #include "IceBuildDefs.h"
 #include "IceCompileServer.h"
+#ifdef ALLOW_LINUX_MALLOC_PROFILE

[John, 2016/03/15 15:19:07]

if you guard entire LinuxMallocProfiling.h file with

#ifdef ALLOW_LINUX_MALLOC_PROFILE
#endif // ALLOW_LINUX_MALLOC_PROFILE

then you could simply #include it here.

[sehr, 2016/03/17 16:47:14]

Actually, it should have been completely removed here...  Done.

+#include "LinuxMallocProfiling.h"
+#endif // ALLOW_LINUX_MALLOC_PROFILE
 
 #ifdef __pnacl__
 #include <malloc.h>
 #endif // __pnacl__
 
 /// Depending on whether we are building the compiler for the browser or
 /// standalone, we will end up creating a Ice::BrowserCompileServer or
 /// Ice::CLCompileServer object. Method
 /// Ice::CompileServer::runAndReturnErrorCode is used for the invocation.
 /// There are no real commandline arguments in the browser case. They are
 /// supplied via IPC so argc, and argv are not used in that case.
 /// We can only compile the Ice::BrowserCompileServer object with the PNaCl
 /// compiler toolchain, when building Subzero as a sandboxed translator.
 int main(int argc, char **argv) {
 #ifdef __pnacl__
 #define M_GRANULARITY (-2)
   // PNaCl's default malloc implementation grabs small chunks of memory with
   // mmap at a time, hence causing significant slowdowns. This call ensures that
   // mmap is used to allocate 16MB at a time, to amortize the system call cost.
   mallopt(M_GRANULARITY, 16 * 1024 * 1024);
 #undef M_GRANULARITY
 #endif // __pnacl__
 
   if (Ice::BuildDefs::browser()) {
     assert(argc == 1);
     return Ice::BrowserCompileServer().runAndReturnErrorCode();
   }
   return Ice::CLCompileServer(argc, argv).runAndReturnErrorCode();
 }