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Throughout change all calls of low_priority_sleep (0) to yield ().

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* miscfuncs.cc (yield): Rename from low_priority_sleep.  Remove all of the
logic which called Sleep() and just use SwitchToThread.
* miscfuncs.h (yield): Rename from low_priority_sleep.
(SLEEP_0_STAY_LOW): Delete unused define.
* shared.cc (memory_init): Move heap_init() call directly after shared memory
initialization to more closely mimic long-standing program flow.
* tty.cc (tty_list::terminate): Replace call to low_priority_sleep with Sleep.
This commit is contained in:
Christopher Faylor
2010-03-12 23:13:48 +00:00
parent 36960dec37
commit 084ea5108e
18 changed files with 48 additions and 74 deletions
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40
winsup/cygwin/miscfuncs.cc
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@ -228,43 +228,11 @@ check_iovec (const struct iovec *iov, int iovcnt, bool forwrite)
return (ssize_t) tot;
}
extern "C" int
low_priority_sleep (DWORD secs)
void
yield ()
{
HANDLE thisthread = GetCurrentThread ();
int curr_prio = GetThreadPriority (thisthread);
bool staylow;
if (secs != INFINITE)
staylow = false;
else
{
secs = 0;
staylow = true;
}
if (!secs)
{
for (int i = 0; i < 3; i++)
SwitchToThread ();
}
else
{
int new_prio;
if (GetCurrentThreadId () == cygthread::main_thread_id)
new_prio = THREAD_PRIORITY_LOWEST;
else
new_prio = GetThreadPriority (hMainThread);
if (curr_prio != new_prio)
/* Force any threads in normal priority to be scheduled */
SetThreadPriority (thisthread, new_prio);
Sleep (secs);
if (!staylow && curr_prio != new_prio)
SetThreadPriority (thisthread, curr_prio);
}
return curr_prio;
for (int i = 0; i < 3; i++)
SwitchToThread ();
}
/* Get a default value for the nice factor. When changing these values,