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* child_info.h (CURR_CHILD_INFO_MAGIC): Reset to new value.

Browse Source 
(child_info::cygheap_alloc_sz): New field.
* cygheap.cc (init_cheap): Reduce size of cygwin stack until minimal hit when
attempting initial allocation.
(cygheap_setup_for_child): Use alloc_sz to create secondary memory mapped
entry.  Store alloc_sz in cygheap_alloc_sz.
(cygheap_fixup_in_child): Use cygheap_alloc_sz to map parent's cygheap.
* cygheap.h (_CYGHEAPSIZE_SLOP): New define.
(CYGHEAPSIZE): Use _CYGHEAPSIZE_SLOP.
This commit is contained in:
Christopher Faylor
2004-03-18 19:30:51 +00:00
parent 891d1990ab
commit d8f87fba65
4 changed files with 33 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
winsup/cygwin/ChangeLog
View File

@@ -1,3 +1,15 @@
2004-03-18 Christopher Faylor <cgf@redhat.com>
* child_info.h (CURR_CHILD_INFO_MAGIC): Reset to new value.
(child_info::cygheap_alloc_sz): New field.
* cygheap.cc (init_cheap): Reduce size of cygwin stack until minimal
hit when attempting initial allocation.
(cygheap_setup_for_child): Use alloc_sz to create secondary memory
mapped entry. Store alloc_sz in cygheap_alloc_sz.
(cygheap_fixup_in_child): Use cygheap_alloc_sz to map parent's cygheap.
* cygheap.h (_CYGHEAPSIZE_SLOP): New define.
(CYGHEAPSIZE): Use _CYGHEAPSIZE_SLOP.
2004-03-18 Corinna Vinschen <corinna@vinschen.de>
* fhandler_proc.cc (format_proc_meminfo): On NT, try to figure out

3
winsup/cygwin/child_info.h
View File

@@ -29,7 +29,7 @@ enum
#define EXEC_MAGIC_SIZE sizeof(child_info)
#define CURR_CHILD_INFO_MAGIC 0x4239088U
#define CURR_CHILD_INFO_MAGIC 0x70172124U
/* NOTE: Do not make gratuitous changes to the names or organization of the
below class. The layout is checksummed to determine compatibility between
@@ -49,6 +49,7 @@ public:
HANDLE pppid_handle;
init_cygheap *cygheap;
void *cygheap_max;
DWORD cygheap_alloc_sz;
HANDLE cygheap_h;
unsigned fhandler_union_cb;
};

23
winsup/cygwin/cygheap.cc
View File

@@ -28,6 +28,7 @@ init_cygheap NO_COPY *cygheap;
void NO_COPY *cygheap_max;
static NO_COPY muto *cygheap_protect;
static NO_COPY DWORD alloc_sz;
struct cygheap_entry
{
@@ -50,13 +51,18 @@ static void __stdcall _cfree (void *ptr) __attribute__((regparm(1)));
static void
init_cheap ()
{
cygheap = (init_cygheap *) VirtualAlloc ((void *) &_cygheap_start, CYGHEAPSIZE, MEM_RESERVE, PAGE_NOACCESS);
for (cygheap = NULL, alloc_sz = CYGHEAPSIZE;
!cygheap && alloc_sz > CYGHEAPSIZE_MIN;
alloc_sz -= 2 * (1024 * 1024))
cygheap = (init_cygheap *) VirtualAlloc ((void *) &_cygheap_start, alloc_sz,
MEM_RESERVE, PAGE_NOACCESS);
if (!cygheap)
{
MEMORY_BASIC_INFORMATION m;
if (!VirtualQuery ((LPCVOID) &_cygheap_start, &m, sizeof m))
system_printf ("couldn't get memory info, %E");
system_printf ("Couldn't reserve space for cygwin's heap, %E");
system_printf ("Couldn't reserve %d bytes of space for cygwin's heap, %E",
alloc_sz);
api_fatal ("AllocationBase %p, BaseAddress %p, RegionSize %p, State %p\n",
m.AllocationBase, m.BaseAddress, m.RegionSize, m.State);
}
@@ -79,13 +85,13 @@ cygheap_setup_for_child (child_info *ci, bool dup_later)
void *newcygheap;
cygheap_protect->acquire ();
unsigned n = (char *) cygheap_max - (char *) cygheap;
unsigned size = CYGHEAPSIZE;
unsigned size = alloc_sz;
if (size < n)
size = n + (128 * 1024);
ci->cygheap_h = CreateFileMapping (INVALID_HANDLE_VALUE, &sec_none,
CFMAP_OPTIONS, 0, size, NULL);
if (!ci->cygheap_h)
api_fatal ("Couldn't create heap for child, size %d, %E", CYGHEAPSIZE);
api_fatal ("Couldn't create heap for child, size %d, %E", size);
newcygheap = MapViewOfFileEx (ci->cygheap_h, MVMAP_OPTIONS, 0, 0, 0, NULL);
ProtectHandle1INH (ci->cygheap_h, passed_cygheap_h);
if (!dup_later)
@@ -93,6 +99,7 @@ cygheap_setup_for_child (child_info *ci, bool dup_later)
cygheap_protect->release ();
ci->cygheap = cygheap;
ci->cygheap_max = cygheap_max;
ci->cygheap_alloc_sz = size;
return newcygheap;
}
@@ -129,7 +136,8 @@ cygheap_fixup_in_child (bool execed)
newaddr = MapViewOfFileEx (child_proc_info->cygheap_h, MVMAP_OPTIONS, 0, 0, 0, NULL);
DWORD n = (DWORD) cygheap_max - (DWORD) cygheap;
/* Reserve cygwin heap in same spot as parent */
if (!VirtualAlloc (cygheap, CYGHEAPSIZE, MEM_RESERVE, PAGE_NOACCESS))
if (!VirtualAlloc (cygheap, child_proc_info->cygheap_alloc_sz,
MEM_RESERVE, PAGE_NOACCESS))
{
MEMORY_BASIC_INFORMATION m;
memset (&m, 0, sizeof m);
@@ -205,8 +213,9 @@ _csbrk (int sbs)
/* nothing to do */;
else if (!VirtualAlloc (prebrk, (DWORD) sbs, MEM_COMMIT, PAGE_READWRITE))
{
malloc_printf ("couldn't commit memory for cygwin heap, prebrk %p, size %d, heapsize now %d, max heap size %d, %E",
prebrk, sbs, (char *) cygheap_max - (char *) cygheap, CYGHEAPSIZE);
malloc_printf ("couldn't commit memory for cygwin heap, prebrk %p, size %d, heapsize now %d, max heap size %u, %E",
prebrk, sbs, (char *) cygheap_max - (char *) cygheap,
alloc_sz);
__seterrno ();
cygheap_max = (char *) cygheap_max - sbs;
return NULL;

4
winsup/cygwin/cygheap.h
View File

@@ -272,7 +272,9 @@ struct init_cygheap
void close_ctty ();
};
#define CYGHEAPSIZE (sizeof (init_cygheap) + (20000 * sizeof (fhandler_union)) + (32 * 1024 * 1024))
#define _CYGHEAPSIZE_SLOP (32 * 1024 * 1024)
#define CYGHEAPSIZE (sizeof (init_cygheap) + (20000 * sizeof (fhandler_union)) + _CYGHEAPSIZE_SLOP)
#define CYGHEAPSIZE_MIN (sizeof (init_cygheap) + (10000 * sizeof (fhandler_union)))
extern init_cygheap *cygheap;
extern void *cygheap_max;