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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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8
winsup/cygwin/shared.cc
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@@ -318,7 +318,7 @@ user_shared_initialize ()
else
{
while (!user_shared->cb)
low_priority_sleep (0); // Should be hit only very very rarely
yield (); // Should be hit only very very rarely
if (user_shared->version != sversion)
multiple_cygwin_problem ("user shared memory version", user_shared->version, sversion);
else if (user_shared->cb != sizeof (*user_shared))
@@ -423,7 +423,7 @@ memory_init (bool init_cygheap)
LONG smi = InterlockedExchange (&shared_mem_inited, -1);
if (smi < 0)
{
low_priority_sleep (0);
yield ();
continue;
}
@@ -431,12 +431,13 @@ memory_init (bool init_cygheap)
/* Initialize installation root dir */
init_installation_root ();
/* Installation root dir has been globally initialized */
cygwin_shared = (shared_info *) open_shared (L"shared",
CYGWIN_VERSION_SHARED_DATA,
cygwin_shared_h,
sizeof (*cygwin_shared),
SH_CYGWIN_SHARED);
heap_init ();
if (!smi)
{
cygwin_shared->initialize ();
@@ -451,7 +452,6 @@ memory_init (bool init_cygheap)
InterlockedExchange (&shared_mem_inited, smi);
break;
}
heap_init ();
user_shared_create (false);
}