aboutsummaryrefslogtreecommitdiff
path: root/build/process
diff options
context:
space:
mode:
authorBoris Kolpackov <boris@codesynthesis.com>2014-12-05 13:26:29 +0200
committerBoris Kolpackov <boris@codesynthesis.com>2014-12-05 13:26:29 +0200
commit985e8f5f28da87be779b80942577f088321024af (patch)
tree811473dc2c89d755e46cfa28711c3ce8569a1556 /build/process
parent0ba8af59dbc3e7419a9ef24c6d4d466d6d64862c (diff)
Add support for starting processes, getting file timestamps
g++-4.9 -std=c++11 -I.. -o bd bd.cxx process.cxx timestamp.cxx
Diffstat (limited to 'build/process')
-rw-r--r--build/process67
1 files changed, 67 insertions, 0 deletions
diff --git a/build/process b/build/process
new file mode 100644
index 0000000..0b45846
--- /dev/null
+++ b/build/process
@@ -0,0 +1,67 @@
+// file : build/process -*- C++ -*-
+// copyright : Copyright (c) 2014-2015 Code Synthesis Tools CC
+// license : MIT; see accompanying LICENSE file
+
+#ifndef BUILD_PROCESS
+#define BUILD_PROCESS
+
+#ifndef _WIN32
+# include <sys/types.h> // pid_t
+#endif
+
+#include <cassert>
+#include <system_error>
+
+namespace build
+{
+
+ struct process_error: std::system_error
+ {
+ process_error (int e, bool child)
+ : system_error (e, std::system_category ()), child_ (child) {}
+
+ bool
+ child () const {return child_;}
+
+ private:
+ bool child_;
+ };
+
+ struct process
+ {
+ // Start another process using the specified command line. Connect the
+ // newly created process' stdin to out_fd. Also if connect_* are true,
+ // connect the created process' stdout and stderr to in_*fd. Throw
+ // process_error if anything goes wrong.
+ //
+ // Note that some of the exceptions (e.g., if exec() failed) can be
+ // thrown in the child version of us.
+ //
+ process (char const* args[],
+ bool connect_stdin = false,
+ bool connect_stderr = false,
+ bool connect_stdout = false);
+
+ // Wait for the process to terminate. Return true if the process
+ // terminated normally and with the zero exit status. Throw
+ // process_error if anything goes wrong.
+ //
+ bool
+ wait ();
+
+ ~process () {assert (id == 0);}
+
+#ifndef _WIN32
+ typedef pid_t id_type;
+#else
+ typedef void* id_type; // Win32 HANDLE.
+#endif
+
+ id_type id;
+ int out_fd; // Write to this fd to send to the new process' stdin.
+ int in_efd; // Read from this fd to receive from the new process' stderr.
+ int in_ofd; // Read from this fd to receive from the new process' stdout.
+ };
+}
+
+#endif // BUILD_PROCESS