Make LibcryptoThreading cross-platform

Change-Id: Id559c9b4d61f6d5d419735becc968fff3aa7f866

packager/app/libcrypto_threading.cc

@@ -6,17 +6,47 @@
 
 #include "packager/app/libcrypto_threading.h"
 
+#include <openssl/crypto.h>
+
+#include <vector>
+
+#include "packager/base/logging.h"
+#include "packager/base/memory/scoped_ptr.h"
+#include "packager/base/synchronization/lock.h"
+#include "packager/base/threading/platform_thread.h"
+
 namespace edash_packager {
 namespace media {
 
-LibcryptoThreading::LibcryptoThreading() {}
+namespace {
 
-LibcryptoThreading::~LibcryptoThreading() {
-  TerminateLibcryptoThreading();
+scoped_ptr<base::Lock[]> global_locks;
+
+void LockFunction(int mode, int n, const char* file, int line) {
+  VLOG(2) << "CryptoLock @ " << file << ":" << line;
+  if (mode & CRYPTO_LOCK)
+    global_locks[n].Acquire();
+  else
+    global_locks[n].Release();
 }
 
-bool LibcryptoThreading::Initialize() {
-  return InitLibcryptoThreading();
+void ThreadIdFunction(CRYPTO_THREADID* id) {
+  CRYPTO_THREADID_set_numeric(
+      id, static_cast<unsigned long>(base::PlatformThread::CurrentId()));
+}
+
+}  // namespace
+
+LibcryptoThreading::LibcryptoThreading() {
+  global_locks.reset(new base::Lock[CRYPTO_num_locks()]);
+  CRYPTO_THREADID_set_callback(ThreadIdFunction);
+  CRYPTO_set_locking_callback(LockFunction);
+}
+
+LibcryptoThreading::~LibcryptoThreading() {
+  CRYPTO_THREADID_set_callback(NULL);
+  CRYPTO_set_locking_callback(NULL);
+  global_locks.reset();
 }
 
 }  // namespace media

packager/app/libcrypto_threading.h

@@ -12,24 +12,12 @@
 namespace edash_packager {
 namespace media {
 
-/// Enable thread safety for OpenSSL libcrypto.
-/// @return true if successful, false otherwise.
-bool InitLibcryptoThreading();
-
-/// Terminate thread safety for OpenSSL libcrypto.
-/// @return true if successful, false otherwise.
-bool TerminateLibcryptoThreading();
-
 /// Convenience class which initializes and terminates libcrypto threading.
 class LibcryptoThreading {
  public:
   LibcryptoThreading();
   ~LibcryptoThreading();
 
-  /// Enables thread safety for OpenSSL libcrypto.
-  /// @return true if successful, false otherwise.
-  bool Initialize();
-
  private:
   DISALLOW_COPY_AND_ASSIGN(LibcryptoThreading);
 };

packager/app/libcrypto_threading_posix.cc

@@ -1,54 +0,0 @@
-// Copyright 2014 Google Inc. All rights reserved.
-//
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file or at
-// https://developers.google.com/open-source/licenses/bsd
-
-#include "packager/app/libcrypto_threading.h"
-
-#include <openssl/crypto.h>
-#include <pthread.h>
-
-#include <vector>
-
-namespace {
-
-std::vector<pthread_mutex_t> global_locks;
-
-void LockFunction(int mode, int n, const char* file, int line) {
-  if (mode & CRYPTO_LOCK)
-    pthread_mutex_lock(&global_locks[n]);
-  else
-    pthread_mutex_unlock(&global_locks[n]);
-}
-
-unsigned long ThreadIdFunction() {
-  return static_cast<unsigned long>(pthread_self());
-}
-
-} // anonymous namespace
-
-namespace edash_packager {
-namespace media {
-
-bool InitLibcryptoThreading() {
-  int num_global_locks = CRYPTO_num_locks();
-  global_locks.resize(num_global_locks);
-  for (int i = 0; i < num_global_locks; ++i)
-    pthread_mutex_init(&global_locks[i], NULL);
-  CRYPTO_set_id_callback(ThreadIdFunction);
-  CRYPTO_set_locking_callback(LockFunction);
-  return true;
-}
-
-bool TerminateLibcryptoThreading() {
-  CRYPTO_set_id_callback(NULL);
-  CRYPTO_set_locking_callback(NULL);
-  for (size_t i = 0; i < global_locks.size(); ++i)
-    pthread_mutex_destroy(&global_locks[i]);
-  global_locks.clear();
-  return true;
-}
-
-}  // namespace media
-}  // namespace edash_packager

packager/app/packager_main.cc

@@ -311,10 +311,6 @@ int PackagerMain(int argc, char** argv) {
     return kArgumentValidationFailed;
 
   edash_packager::media::LibcryptoThreading libcrypto_threading;
-  if (!libcrypto_threading.Initialize()) {
-    LOG(ERROR) << "Could not initialize libcrypto threading.";
-    return kInternalError;
-  }
   // TODO(tinskip): Make InsertStreamDescriptor a member of
   // StreamDescriptorList.
   StreamDescriptorList stream_descriptors;

packager/packager.gyp

@@ -43,13 +43,6 @@
         'third_party/gflags/gflags.gyp:gflags',
         'third_party/openssl/openssl.gyp:openssl',
       ],
-      'conditions': [
-        [ 'os_posix == 1', {
-          'sources': [
-            'app/libcrypto_threading_posix.cc',
-          ]
-        }],
-      ],
     },
     {
       'target_name': 'mpd_generator',