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newlib-cygwin
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* syscalls.cc (getpagesize): Save pagesize in global variable to 

avoid calling GetSystemInfo too often.
        * heap.cc (getpagesize): Eliminate.
        (heap_init): Use getpagesize function from syscalls.cc.
This commit is contained in:
Corinna Vinschen 2001-01-15 12:25:00 +00:00
parent 4cf2c0e0cb
commit dc3651b6cd
3 changed files with 18 additions and 9 deletions
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7
winsup/cygwin/ChangeLog
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@ -1,3 +1,10 @@
Mon Jan 15 12:48:00 2001 Corinna Vinschen <corinna@vinschen.de>
* syscalls.cc (getpagesize): Save pagesize in global variable to
avoid calling GetSystemInfo too often.
* heap.cc (getpagesize): Eliminate.
(heap_init): Use getpagesize function from syscalls.cc.
Mon Jan 15 11:56:00 2001 Corinna Vinschen <corinna@vinschen.de> Mon Jan 15 11:56:00 2001 Corinna Vinschen <corinna@vinschen.de>
* sysconf.cc (sysconf): return `getpagesize ()' on _SC_PAGESIZE * sysconf.cc (sysconf): return `getpagesize ()' on _SC_PAGESIZE

11
winsup/cygwin/heap.cc
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@ -21,14 +21,6 @@ details. */
static unsigned page_const = 0; static unsigned page_const = 0;
static __inline__ int
getpagesize(void)
{
SYSTEM_INFO si;
GetSystemInfo(&si);
return (int)si.dwPageSize;
}
/* Initialize the heap at process start up. */ /* Initialize the heap at process start up. */
void void
@ -37,7 +29,8 @@ heap_init ()
/* If we're the forkee, we must allocate the heap at exactly the same place /* If we're the forkee, we must allocate the heap at exactly the same place
as our parent. If not, we don't care where it ends up. */ as our parent. If not, we don't care where it ends up. */
page_const = getpagesize(); extern size_t getpagesize ();
page_const = getpagesize ();
if (brkbase) if (brkbase)
{ {
DWORD chunk = brkchunk; /* allocation chunk */ DWORD chunk = brkchunk; /* allocation chunk */

9
winsup/cygwin/syscalls.cc
View File

@ -1353,10 +1353,19 @@ getdtablesize ()
return fdtab.size; return fdtab.size;
} }
static DWORD sys_page_size = 0;
extern "C" size_t extern "C" size_t
getpagesize () getpagesize ()
{ {
return sysconf (_SC_PAGESIZE); return sysconf (_SC_PAGESIZE);
if (!sys_page_size)
{
SYSTEM_INFO si;
GetSystemInfo(&si);
sys_page_size = si.dwPageSize;
}
return (int)sys_page_size;
} }
/* FIXME: not all values are correct... */ /* FIXME: not all values are correct... */