void mypthread_exit(void *retval)
{
allThreads[threadIndex].status = EXITED;
allThreads[threadIndex].retval = retval;
free(allThreads[threadIndex].context.uc_stack.ss_sp);
if(allThreads[threadIndex].retadd)
{
*(allThreads[threadIndex].retadd) = retval;
}
if (allThreads[threadIndex].beingJoinedOnBy > -1)
{
int joiningThreadIndex = allThreads[threadIndex].beingJoinedOnBy;
allThreads[joiningThreadIndex].status = READY;
}
int next = getReady();
if (next < 0)
{
int waiting = getWaiting();
if (waiting < 0)
{
printf("No waiting or exiting threads found. Exiting.\n");
exit(1);
}
next = allThreads[waiting].index;
}
threadIndex = next;
allThreads[threadIndex].status = RUNNING;
setcontext(&(allThreads[threadIndex].context));
}
int mypthread_yield(void)
{
if (!mainSetup)
{
int unused = getUnused();
if (getcontext(&(allThreads[unused].context)) != 0)
{
printf("Error getting context.\n");
exit(0);
}
allThreads[unused].context.uc_stack.ss_sp = malloc(STACKSIZE);
allThreads[unused].context.uc_stack.ss_size = STACKSIZE;
allThreads[unused].status = READY;
allThreads[threadIndex].status = RUNNING;
mainSetup = 1;
swapcontext(&(allThreads[unused].context), &(allThreads[threadIndex].context));
return 0;
}
allThreads[threadIndex].status = READY;
int next = getReady();
if (next < 0)
{
int waiting = getWaiting();
if (waiting < 0)
{
printf("No waiting threads found.\n");
exit(0);
}
next = allThreads[waiting].index;
}
int old = threadIndex;
threadIndex = next;
allThreads[threadIndex].status = RUNNING;
swapcontext(&(allThreads[old].context), &(allThreads[threadIndex].context));
return 0;
}
BSONObj MongosType::toBSON() const {
BSONObjBuilder builder;
if (_name)
builder.append(name.name(), getName());
if (_ping)
builder.append(ping.name(), getPing());
if (_uptime)
builder.append(uptime.name(), getUptime());
if (_waiting)
builder.append(waiting.name(), getWaiting());
if (_mongoVersion)
builder.append(mongoVersion.name(), getMongoVersion());
if (_configVersion)
builder.append(configVersion.name(), getConfigVersion());
return builder.obj();
}
int mypthread_join(mypthread_t thread, void **retval)
{
if (!mainSetup)
{
int unused = getUnused();
if (getcontext(&(allThreads[unused].context)) != 0)
{
printf("Error getting context.\n");
exit(0);
}
allThreads[unused].context.uc_stack.ss_sp = malloc(STACKSIZE);
allThreads[unused].context.uc_stack.ss_size = STACKSIZE;
allThreads[thread.index].beingJoinedOnBy = allThreads[unused].index;
threadIndex = thread.index;
allThreads[threadIndex].status = RUNNING;
allThreads[unused].status = WAITING;
if (retval)
{
printf("retval detected in join call, setting return address in thread struct\n");
allThreads[threadIndex].retadd = retval;
printf("retadd set to %p\n", allThreads[threadIndex].retadd);
}
mainSetup = 1;
swapcontext(&(allThreads[unused].context), &(allThreads[threadIndex].context));
return 0;
}
if (threadIndex == thread.index)
{
printf("A thread cannot join on itself.\n");
return -1;
}
if (allThreads[thread.index].beingJoinedOnBy > -1)
{
printf("Thread is already being joined on.\n");
return -1;
}
if (retval)
{
printf("retval detected in join call (not in main setup), setting return address in thread struct\n");
allThreads[thread.index].retadd = retval;
printf("retadd set to %p\n", allThreads[threadIndex].retadd);
}
if (allThreads[threadIndex].status == EXITED)
{
allThreads[threadIndex].status = UNUSED;
free(allThreads[threadIndex].context.uc_stack.ss_sp);
allThreads[threadIndex].beingJoinedOnBy = -1;
count--;
return 0;
}
allThreads[threadIndex].status = WAITING;
allThreads[thread.index].beingJoinedOnBy = threadIndex;
int next = getReady();
if (next < 0)
{
int waiting = getWaiting();
if (waiting < 0)
{
printf("No waiting threads found.\n");
exit(0);
}
next = allThreads[waiting].index;
}
int old = threadIndex;
threadIndex = next;
allThreads[threadIndex].status = RUNNING;
swapcontext(&(allThreads[old].context), &(allThreads[threadIndex].context));
return 0;
}
