src/mojo/system/entrypoints.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "mojo/system/entrypoints.h"
   6
   7 #include "base/logging.h"
   8 #include "mojo/public/c/system/buffer.h"
   9 #include "mojo/public/c/system/data_pipe.h"
  10 #include "mojo/public/c/system/functions.h"
  11 #include "mojo/public/c/system/message_pipe.h"
  12 #include "mojo/system/core.h"
  13
  14 static mojo::system::Core* g_core = NULL;
  15
  16 using mojo::system::MakeUserPointer;
  17
  18 namespace mojo {
  19 namespace system {
  20 namespace entrypoints {
  21
  22 void SetCore(Core* core) {
  23   g_core = core;
  24 }
  25
  26 Core* GetCore() {
  27   return g_core;
  28 }
  29
  30 }  // namespace entrypoints
  31 }  // namepace system
  32 }  // namespace mojo
  33
  34 // Definitions of the system functions.
  35 extern "C" {
  36 MojoTimeTicks MojoGetTimeTicksNow() {
  37   return g_core->GetTimeTicksNow();
  38 }
  39
  40 MojoResult MojoClose(MojoHandle handle) {
  41   return g_core->Close(handle);
  42 }
  43
  44 MojoResult MojoWait(MojoHandle handle,
  45                     MojoHandleSignals signals,
  46                     MojoDeadline deadline) {
  47   return g_core->Wait(
  48       handle, signals, deadline, mojo::system::NullUserPointer());
  49 }
  50
  51 MojoResult MojoWaitMany(const MojoHandle* handles,
  52                         const MojoHandleSignals* signals,
  53                         uint32_t num_handles,
  54                         MojoDeadline deadline) {
  55   uint32_t result_index = static_cast<uint32_t>(-1);
  56   MojoResult result = g_core->WaitMany(MakeUserPointer(handles),
  57                                        MakeUserPointer(signals),
  58                                        num_handles,
  59                                        deadline,
  60                                        MakeUserPointer(&result_index),
  61                                        mojo::system::NullUserPointer());
  62   return (result == MOJO_RESULT_OK) ? static_cast<MojoResult>(result_index)
  63                                     : result;
  64 }
  65
  66 MojoResult MojoCreateMessagePipe(const MojoCreateMessagePipeOptions* options,
  67                                  MojoHandle* message_pipe_handle0,
  68                                  MojoHandle* message_pipe_handle1) {
  69   return g_core->CreateMessagePipe(MakeUserPointer(options),
  70                                    MakeUserPointer(message_pipe_handle0),
  71                                    MakeUserPointer(message_pipe_handle1));
  72 }
  73
  74 MojoResult MojoWriteMessage(MojoHandle message_pipe_handle,
  75                             const void* bytes,
  76                             uint32_t num_bytes,
  77                             const MojoHandle* handles,
  78                             uint32_t num_handles,
  79                             MojoWriteMessageFlags flags) {
  80   return g_core->WriteMessage(message_pipe_handle,
  81                               MakeUserPointer(bytes),
  82                               num_bytes,
  83                               MakeUserPointer(handles),
  84                               num_handles,
  85                               flags);
  86 }
  87
  88 MojoResult MojoReadMessage(MojoHandle message_pipe_handle,
  89                            void* bytes,
  90                            uint32_t* num_bytes,
  91                            MojoHandle* handles,
  92                            uint32_t* num_handles,
  93                            MojoReadMessageFlags flags) {
  94   return g_core->ReadMessage(message_pipe_handle,
  95                              MakeUserPointer(bytes),
  96                              MakeUserPointer(num_bytes),
  97                              MakeUserPointer(handles),
  98                              MakeUserPointer(num_handles),
  99                              flags);
 100 }
 101
 102 MojoResult MojoCreateDataPipe(const MojoCreateDataPipeOptions* options,
 103                               MojoHandle* data_pipe_producer_handle,
 104                               MojoHandle* data_pipe_consumer_handle) {
 105   return g_core->CreateDataPipe(MakeUserPointer(options),
 106                                 MakeUserPointer(data_pipe_producer_handle),
 107                                 MakeUserPointer(data_pipe_consumer_handle));
 108 }
 109
 110 MojoResult MojoWriteData(MojoHandle data_pipe_producer_handle,
 111                          const void* elements,
 112                          uint32_t* num_elements,
 113                          MojoWriteDataFlags flags) {
 114   return g_core->WriteData(data_pipe_producer_handle,
 115                            MakeUserPointer(elements),
 116                            MakeUserPointer(num_elements),
 117                            flags);
 118 }
 119
 120 MojoResult MojoBeginWriteData(MojoHandle data_pipe_producer_handle,
 121                               void** buffer,
 122                               uint32_t* buffer_num_elements,
 123                               MojoWriteDataFlags flags) {
 124   return g_core->BeginWriteData(data_pipe_producer_handle,
 125                                 MakeUserPointer(buffer),
 126                                 MakeUserPointer(buffer_num_elements),
 127                                 flags);
 128 }
 129
 130 MojoResult MojoEndWriteData(MojoHandle data_pipe_producer_handle,
 131                             uint32_t num_elements_written) {
 132   return g_core->EndWriteData(data_pipe_producer_handle, num_elements_written);
 133 }
 134
 135 MojoResult MojoReadData(MojoHandle data_pipe_consumer_handle,
 136                         void* elements,
 137                         uint32_t* num_elements,
 138                         MojoReadDataFlags flags) {
 139   return g_core->ReadData(data_pipe_consumer_handle,
 140                           MakeUserPointer(elements),
 141                           MakeUserPointer(num_elements),
 142                           flags);
 143 }
 144
 145 MojoResult MojoBeginReadData(MojoHandle data_pipe_consumer_handle,
 146                              const void** buffer,
 147                              uint32_t* buffer_num_elements,
 148                              MojoReadDataFlags flags) {
 149   return g_core->BeginReadData(data_pipe_consumer_handle,
 150                                MakeUserPointer(buffer),
 151                                MakeUserPointer(buffer_num_elements),
 152                                flags);
 153 }
 154
 155 MojoResult MojoEndReadData(MojoHandle data_pipe_consumer_handle,
 156                            uint32_t num_elements_read) {
 157   return g_core->EndReadData(data_pipe_consumer_handle, num_elements_read);
 158 }
 159
 160 MojoResult MojoCreateSharedBuffer(
 161     const struct MojoCreateSharedBufferOptions* options,
 162     uint64_t num_bytes,
 163     MojoHandle* shared_buffer_handle) {
 164   return g_core->CreateSharedBuffer(MakeUserPointer(options),
 165                                     num_bytes,
 166                                     MakeUserPointer(shared_buffer_handle));
 167 }
 168
 169 MojoResult MojoDuplicateBufferHandle(
 170     MojoHandle buffer_handle,
 171     const struct MojoDuplicateBufferHandleOptions* options,
 172     MojoHandle* new_buffer_handle) {
 173   return g_core->DuplicateBufferHandle(buffer_handle,
 174                                        MakeUserPointer(options),
 175                                        MakeUserPointer(new_buffer_handle));
 176 }
 177
 178 MojoResult MojoMapBuffer(MojoHandle buffer_handle,
 179                          uint64_t offset,
 180                          uint64_t num_bytes,
 181                          void** buffer,
 182                          MojoMapBufferFlags flags) {
 183   return g_core->MapBuffer(
 184       buffer_handle, offset, num_bytes, MakeUserPointer(buffer), flags);
 185 }
 186
 187 MojoResult MojoUnmapBuffer(void* buffer) {
 188   return g_core->UnmapBuffer(MakeUserPointer(buffer));
 189 }
 190
 191 }  // extern "C"