windows: subprocess implementation for Windows

Heavily based on a patch from Sergey Nenakhov <nenakhov.sergey@gmail.com>.

1 files changed, 25 insertions, 2 deletions

diff --git a/src/subprocess.h b/src/subprocess.h
index 934a220..9828bf4 100644
--- a/src/subprocess.h
+++ b/src/subprocess.h
@@ -20,6 +20,10 @@
 #include <queue>
 using namespace std;
 
+#ifdef _WIN32
+#include <windows.h>
+#endif
+
 /// Subprocess wraps a single async subprocess.  It is entirely
 /// passive: it expects the caller to notify it when its fds are ready
 /// for reading, as well as call Finish() to reap the child once done()
@@ -27,8 +31,8 @@ using namespace std;
 struct Subprocess {
   Subprocess();
   ~Subprocess();
-  bool Start(const string& command);
-  void OnFDReady();
+  bool Start(struct SubprocessSet* set, const string& command);
+  void OnPipeReady();
   /// Returns true on successful process exit.
   bool Finish();
 
@@ -38,8 +42,20 @@ struct Subprocess {
 
  private:
   string buf_;
+
+#ifdef _WIN32
+  /// Set up pipe_ as the parent-side pipe of the subprocess; return the
+  /// other end of the pipe, usable in the child process.
+  HANDLE SetupPipe(HANDLE ioport);
+
+  HANDLE child_;
+  HANDLE pipe_;
+  OVERLAPPED overlapped_;
+  char overlapped_buf_[4 << 10];
+#else
   int fd_;
   pid_t pid_;
+#endif
 
   friend struct SubprocessSet;
 };
@@ -48,12 +64,19 @@ struct Subprocess {
 /// DoWork() waits for any state change in subprocesses; finished_
 /// is a queue of subprocesses as they finish.
 struct SubprocessSet {
+  SubprocessSet();
+  ~SubprocessSet();
+
   void Add(Subprocess* subprocess);
   void DoWork();
   Subprocess* NextFinished();
 
   vector<Subprocess*> running_;
   queue<Subprocess*> finished_;
+
+#ifdef _WIN32
+  HANDLE ioport_;
+#endif
 };
 
 #endif // NINJA_SUBPROCESS_H_