103 lines
2.9 KiB
C
103 lines
2.9 KiB
C
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/////////////////////////////////////////////////////////////////////////////
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// Name: wx/unix/execute.h
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// Purpose: private details of wxExecute() implementation
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// Author: Vadim Zeitlin
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// Copyright: (c) 1998 Robert Roebling, Julian Smart, Vadim Zeitlin
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// (c) 2013 Vadim Zeitlin
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_UNIX_EXECUTE_H
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#define _WX_UNIX_EXECUTE_H
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#include "wx/app.h"
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#include "wx/hashmap.h"
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#include "wx/process.h"
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#if wxUSE_STREAMS
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#include "wx/unix/pipe.h"
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#include "wx/private/streamtempinput.h"
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#endif
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class wxEventLoopBase;
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// Information associated with a running child process.
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class wxExecuteData
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{
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public:
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wxExecuteData()
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{
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flags =
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pid = 0;
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exitcode = -1;
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process = NULL;
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syncEventLoop = NULL;
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#if wxUSE_STREAMS
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fdOut =
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fdErr = wxPipe::INVALID_FD;
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#endif // wxUSE_STREAMS
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}
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// This must be called in the parent process as soon as fork() returns to
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// update us with the effective child PID. It also ensures that we handle
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// SIGCHLD to be able to detect when this PID exits, so wxTheApp must be
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// available.
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void OnStart(int pid);
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// Called when the child process exits.
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void OnExit(int exitcode);
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// Return true if we should (or already did) redirect the child IO.
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bool IsRedirected() const { return process && process->IsRedirected(); }
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// wxExecute() flags
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int flags;
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// the pid of the child process
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int pid;
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// The exit code of the process, set once the child terminates.
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int exitcode;
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// the associated process object or NULL
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wxProcess *process;
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// Local event loop used to wait for the child process termination in
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// synchronous execution case. We can't create it ourselves as its exact
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// type depends on the application kind (console/GUI), so we rely on
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// wxAppTraits setting up this pointer to point to the appropriate object.
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wxEventLoopBase *syncEventLoop;
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#if wxUSE_STREAMS
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// the input buffer bufOut is connected to stdout, this is why it is
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// called bufOut and not bufIn
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wxStreamTempInputBuffer bufOut,
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bufErr;
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// the corresponding FDs, -1 if not redirected
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int fdOut,
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fdErr;
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#endif // wxUSE_STREAMS
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private:
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// SIGCHLD signal handler that checks whether any of the currently running
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// children have exited.
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static void OnSomeChildExited(int sig);
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// All currently running child processes indexed by their PID.
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//
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// Notice that the container doesn't own its elements.
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WX_DECLARE_HASH_MAP(int, wxExecuteData*, wxIntegerHash, wxIntegerEqual,
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ChildProcessesData);
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static ChildProcessesData ms_childProcesses;
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wxDECLARE_NO_COPY_CLASS(wxExecuteData);
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};
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#endif // _WX_UNIX_EXECUTE_H
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