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fixed several subtle bugs

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This commit is contained in:
Jeff Hill
1996-11-02 02:04:42 +00:00
parent a609cfaa02
commit 452d3d68ca
4 changed files with 108 additions and 102 deletions
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64
src/libCom/fdmgr/fdManager.cpp
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@@ -4,6 +4,9 @@
//
//
// $Log$
// Revision 1.2 1996/09/04 21:50:16 jhill
// added hashed fd to fdi convert
//
// Revision 1.1 1996/08/13 22:48:23 jhill
// dfMgr =>fdManager
//
@@ -12,7 +15,7 @@
//
//
// NOTES:
// 1) This isnt intended for a multi-threading environment
// 1) This library is not thread safe
//
//
@@ -23,17 +26,23 @@
#include <errno.h>
#include <string.h>
#if __GNUC__
extern "C" {
# include <sys/types.h>
int select (int, fd_set *, fd_set *,
fd_set *, struct timeval *);
int bzero (char *b, int length);
} //extern "C"
#endif // __GNUC__
// Both the functions in osiTimer and fdManager are
// implemented in this DLL -> define epicsExportSharesSymbols
#define epicsExportSharedSymbols
#include "osiTimer.h"
#include "fdManager.h"
#include <fdManager.h>
#include <osiTimer.h>
#if !defined(__SUNPRO_CC)
//
// From Stroustrups's "The C++ Programming Language"
// Appendix A: r.14.9
//
// This explicitly instantiates the template class's member
// functions into "fdManager.o"
//
# include <resourceLib.cc>
template class resTable <fdReg, fdRegId>;
#endif
fdManager fileDescriptorManager;
@@ -85,7 +94,7 @@ fdManager::~fdManager()
//
void fdManager::process (const osiTime &delay)
{
tsDLIter<fdReg> regIter(this->regList);
tsDLFwdIter<fdReg> regIter(this->regList);
osiTime minDelay;
osiTime zeroDelay;
fdReg *pReg;
@@ -100,27 +109,26 @@ void fdManager::process (const osiTime &delay)
}
this->processInProg = 1;
while ( (pReg=regIter()) ) {
FD_SET(pReg->getFD(), &this->fdSets[pReg->getType()]);
}
//
// dont bother calling select if the delay to
// the first timer expire is zero
// One shot at expired timers prior to going into
// select. This allows zero delay timers to arm
// fd writes. We will never process the timer queue
// more than once here so that fd activity get serviced
// in a reasonable length of time.
//
while (1) {
minDelay = staticTimerQueue.delayToFirstExpire();
if (zeroDelay>=minDelay) {
staticTimerQueue.process();
minDelay = staticTimerQueue.delayToFirstExpire();
if (zeroDelay>=minDelay) {
staticTimerQueue.process();
}
else {
break;
}
}
}
if (minDelay>=delay) {
minDelay = delay;
}
while ( (pReg=regIter()) ) {
FD_SET(pReg->getFD(), &this->fdSets[pReg->getType()]);
}
minDelay.getTV (tv.tv_sec, tv.tv_usec);
status = select (this->maxFD, &this->fdSets[fdrRead],
&this->fdSets[fdrWrite], &this->fdSets[fdrExcp], &tv);
@@ -208,7 +216,7 @@ fdReg::~fdReg()
//
// fdReg::show()
//
void fdReg::show(unsigned level)
void fdReg::show(unsigned level) const
{
printf ("fdReg at %x\n", (unsigned) this);
if (level>1u) {
@@ -221,7 +229,7 @@ void fdReg::show(unsigned level)
//
// fdRegId::show()
//
void fdRegId::show(unsigned level)
void fdRegId::show(unsigned level) const
{
printf ("fdRegId at %x\n", (unsigned) this);
if (level>1u) {