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implement running LAMMPS asynchonously in a separate thread

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This commit is contained in:
Axel Kohlmeyer
2023-07-27 02:56:07 -04:00
parent a62d1be3e6
commit da0669d988
8 changed files with 279 additions and 77 deletions
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28
tools/lammps-gui/stdcapture.cpp
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@ -24,7 +24,6 @@
#define dup2 _dup2
#define fileno _fileno
#define close _close
#define pipe _pipe
#define read _read
#define eof _eof
#else
@ -44,9 +43,9 @@ StdCapture::StdCapture() : m_oldStdOut(0), m_capturing(false)
m_pipe[READ] = 0;
m_pipe[WRITE] = 0;
#if _WIN32
if (pipe(m_pipe, 65536, O_BINARY) == -1) return;
if (_pipe(m_pipe, 65536, O_BINARY) == -1) return;
#else
if (pipe(m_pipe) == -1) return;
if (pipe2(m_pipe, O_NONBLOCK) == -1) return;
#endif
m_oldStdOut = dup(fileno(stdout));
if (m_oldStdOut == -1) return;
@ -75,8 +74,6 @@ bool StdCapture::EndCapture()
dup2(m_oldStdOut, fileno(stdout));
m_captured.clear();
constexpr int bufSize = 1025;
char buf[bufSize];
int bytesRead;
bool fd_blocked;
@ -104,7 +101,26 @@ bool StdCapture::EndCapture()
return true;
}
std::string StdCapture::GetCapture() const
std::string StdCapture::GetChunk()
{
if (!m_capturing) return std::string();
int bytesRead = 0;
buf[0] = '\0';
#ifdef _WIN32
if (!eof(m_pipe[READ])) {
bytesRead = read(m_pipe[READ], buf, bufSize - 1);
}
#else
bytesRead = read(m_pipe[READ], buf, bufSize - 1);
#endif
if (bytesRead > 0) {
buf[bytesRead] = '\0';
}
return std::string(buf);
}
std::string StdCapture::GetCapture()
{
std::string::size_type idx = m_captured.find_last_not_of("\r\n");
if (idx == std::string::npos) {