1 //=- RemoteTargetExternal.inc - LLVM out-of-process JIT execution for Unix --=//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Implementation of the Unix-specific parts of the RemoteTargetExternal class
11 // which executes JITed code in a separate process from where it was built.
13 //===----------------------------------------------------------------------===//
22 struct ConnectionData_t {
26 ConnectionData_t(int in, int out) : InputPipe(in), OutputPipe(out) {}
33 void RemoteTargetExternal::create() {
45 // Close the parent ends of the pipes
49 // Use our pipes as stdin and stdout
50 if (PipeFD[0][0] != STDIN_FILENO) {
51 dup2(PipeFD[0][0], STDIN_FILENO);
54 if (PipeFD[1][1] != STDOUT_FILENO) {
55 dup2(PipeFD[1][1], STDOUT_FILENO);
59 // Execute the child process.
60 char *args[1] = { NULL };
61 int rc = execv(ChildName.c_str(), args);
63 perror("Error executing child process: ");
68 // Close the child ends of the pipes
72 // Store the parent ends of the pipes
73 ConnectionData = (void*)new ConnectionData_t(PipeFD[1][0], PipeFD[0][1]);
75 Receive(LLI_ChildActive);
79 int RemoteTargetExternal::WriteBytes(const void *Data, size_t Size) {
80 return write(((ConnectionData_t*)ConnectionData)->OutputPipe, Data, Size);
83 int RemoteTargetExternal::ReadBytes(void *Data, size_t Size) {
84 return read(((ConnectionData_t*)ConnectionData)->InputPipe, Data, Size);
87 void RemoteTargetExternal::Wait() {