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polling child process IO seems to work now

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@16660 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2002-08-21 19:49:34 +00:00
parent 92a2a7eb81
commit 6f3d3c68fd
1 changed files with 7 additions and 5 deletions
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12
src/unix/utilsunx.cpp
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@@ -363,7 +363,7 @@ public:
wxPipeInputStream(int fd) : wxFileInputStream(fd) { } wxPipeInputStream(int fd) : wxFileInputStream(fd) { }
// return TRUE if the pipe is still opened // return TRUE if the pipe is still opened
bool IsOpened() const { return TRUE; } // TODO bool IsOpened() const { return !Eof(); }
// return TRUE if we have anything to read, don't block // return TRUE if we have anything to read, don't block
bool IsAvailable() const; bool IsAvailable() const;
@@ -372,7 +372,7 @@ public:
bool wxPipeInputStream::IsAvailable() const bool wxPipeInputStream::IsAvailable() const
{ {
if ( m_lasterror == wxSTREAM_EOF ) if ( m_lasterror == wxSTREAM_EOF )
return TRUE; return FALSE;
// check if there is any input available // check if there is any input available
struct timeval tv; struct timeval tv;
@@ -391,15 +391,17 @@ bool wxPipeInputStream::IsAvailable() const
// fall through // fall through
case 0: case 0:
return TRUE; return FALSE;
default: default:
wxFAIL_MSG(_T("unexpected select() return value")); wxFAIL_MSG(_T("unexpected select() return value"));
// still fall through // still fall through
case 1: case 1:
// input available // input available -- or maybe not, as select() returns 1 when a
return TRUE; // read() will complete without delay, but it could still not read
// anything
return !Eof();
} }
} }