From b21162cf8e06f40baa1f58be6a8c17435cebc34d Mon Sep 17 00:00:00 2001
From: weidai <weidai@57ff6487-cd31-0410-9ec3-f628ee90f5f0>
Date: Fri, 4 Oct 2002 17:31:41 +0000
Subject: Initial revision

git-svn-id: svn://svn.code.sf.net/p/cryptopp/code/trunk/c5@2 57ff6487-cd31-0410-9ec3-f628ee90f5f0
---
 wait.cpp | 110 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 wait.cpp

(limited to 'wait.cpp')

diff --git a/wait.cpp b/wait.cpp
new file mode 100644
index 0000000..f7a0e36
--- /dev/null
+++ b/wait.cpp
@@ -0,0 +1,110 @@
+// wait.cpp - written and placed in the public domain by Wei Dai
+
+#include "pch.h"
+#include "wait.h"
+#include "misc.h"
+
+#ifdef SOCKETS_AVAILABLE
+
+#ifdef USE_BERKELEY_STYLE_SOCKETS
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <unistd.h>
+#endif
+
+NAMESPACE_BEGIN(CryptoPP)
+
+WaitObjectContainer::WaitObjectContainer()
+{
+	Clear();
+}
+
+void WaitObjectContainer::Clear()
+{
+#ifdef USE_WINDOWS_STYLE_SOCKETS
+	m_handles.clear();
+#else
+	m_maxFd = 0;
+	FD_ZERO(&m_readfds);
+	FD_ZERO(&m_writefds);
+#endif
+	m_noWait = false;
+}
+
+#ifdef USE_WINDOWS_STYLE_SOCKETS
+
+void WaitObjectContainer::AddHandle(HANDLE handle)
+{
+	m_handles.push_back(handle);
+}
+
+bool WaitObjectContainer::Wait(unsigned long milliseconds)
+{
+	if (m_noWait || m_handles.empty())
+		return true;
+
+	DWORD result = ::WaitForMultipleObjects(m_handles.size(), &m_handles[0], FALSE, milliseconds);
+
+	if (result >= WAIT_OBJECT_0 && result < WAIT_OBJECT_0 + m_handles.size())
+		return true;
+	else if (result == WAIT_TIMEOUT)
+		return false;
+	else
+		throw Err("WaitObjectContainer: WaitForMultipleObjects failed with error " + IntToString(::GetLastError()));
+}
+
+#else
+
+void WaitObjectContainer::AddReadFd(int fd)
+{
+	FD_SET(fd, &m_readfds);
+	m_maxFd = STDMAX(m_maxFd, fd);
+}
+
+void WaitObjectContainer::AddWriteFd(int fd)
+{
+	FD_SET(fd, &m_writefds);
+	m_maxFd = STDMAX(m_maxFd, fd);
+}
+
+bool WaitObjectContainer::Wait(unsigned long milliseconds)
+{
+	if (m_noWait || m_maxFd == 0)
+		return true;
+
+	timeval tv, *timeout;
+
+	if (milliseconds == INFINITE_TIME)
+		timeout = NULL;
+	else
+	{
+		tv.tv_sec = milliseconds / 1000;
+		tv.tv_usec = (milliseconds % 1000) * 1000;
+		timeout = &tv;
+	}
+
+	int result = select(m_maxFd+1, &m_readfds, &m_writefds, NULL, timeout);
+
+	if (result > 0)
+		return true;
+	else if (result == 0)
+		return false;
+	else
+		throw Err("WaitObjectContainer: select failed with error " + errno);
+}
+
+#endif
+
+// ********************************************************
+
+bool Waitable::Wait(unsigned long milliseconds)
+{
+	WaitObjectContainer container;
+	GetWaitObjects(container);
+	return container.Wait(milliseconds);
+}
+
+NAMESPACE_END
+
+#endif
-- 
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