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wincache_fcache.c
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/*
+----------------------------------------------------------------------------------------------+
| Windows Cache for PHP |
+----------------------------------------------------------------------------------------------+
| Copyright (c) 2009, Microsoft Corporation. All rights reserved. |
| |
| Redistribution and use in source and binary forms, with or without modification, are |
| permitted provided that the following conditions are met: |
| - Redistributions of source code must retain the above copyright notice, this list of |
| conditions and the following disclaimer. |
| - Redistributions in binary form must reproduce the above copyright notice, this list of |
| conditions and the following disclaimer in the documentation and/or other materials provided |
| with the distribution. |
| - Neither the name of the Microsoft Corporation nor the names of its contributors may be |
| used to endorse or promote products derived from this software without specific prior written|
| permission. |
| |
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS |
| OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE|
| GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| OF THE POSSIBILITY OF SUCH DAMAGE. |
+----------------------------------------------------------------------------------------------+
| Module: wincache_fcache.c |
+----------------------------------------------------------------------------------------------+
| Author: Kanwaljeet Singla <[email protected]> |
| Updated: Eric Stenson <[email protected]> |
+----------------------------------------------------------------------------------------------+
*/
#include "precomp.h"
#define READAHEAD_MAXIMUM 0x10000000
static int read_file_security(fcache_context * pfcache, const char * filename, unsigned char ** ppsec);
static int read_file_content(HANDLE hFile, unsigned int filesize, void ** ppbuffer);
/* internal helper functions */
void fcache_init_php_handle(fcache_handle *fhandle);
/* Globals */
unsigned short gfcacheid = 1;
/* Private methods */
static int read_file_security(fcache_context * pfcache, const char * filename, unsigned char ** ppsec)
{
int result = NONFATAL;
SECURITY_INFORMATION sec_info = 0;
unsigned int desc_length = 0;
unsigned char * psec_desc = NULL;
dprintdecorate("start read_file_security");
_ASSERT(pfcache != NULL);
_ASSERT(filename != NULL);
_ASSERT(ppsec != NULL);
*ppsec = NULL;
sec_info |= OWNER_SECURITY_INFORMATION;
sec_info |= GROUP_SECURITY_INFORMATION;
sec_info |= DACL_SECURITY_INFORMATION;
/* Get size of security buffer. Call is expected to fail */
if(GetFileSecurity(filename, sec_info, NULL, 0, &desc_length))
{
goto Finished;
}
psec_desc = (unsigned char *)alloc_smalloc(pfcache->palloc, desc_length);
if(psec_desc == NULL)
{
result = FATAL_OUT_OF_SMEMORY;
goto Finished;
}
if(!GetFileSecurity(filename, sec_info, (PSECURITY_DESCRIPTOR)psec_desc, desc_length, &desc_length))
{
goto Finished;
}
*ppsec = psec_desc;
_ASSERT(SUCCEEDED(result));
Finished:
if(FAILED(result))
{
dprintverbose("failure %d in read_file_security", result);
if(psec_desc != NULL)
{
alloc_sfree(pfcache->palloc, psec_desc);
psec_desc = NULL;
}
}
dprintdecorate("end read_file_security");
return result;
}
static int read_file_content(HANDLE hFile, unsigned int filesize, void ** ppbuffer)
{
int result = NONFATAL;
HRESULT hr = S_OK;
void * pbuffer = NULL;
size_t coffset = 0;
unsigned int readahead = 0;
char * pvread = NULL;
OVERLAPPED Overlapped;
zend_bool breturn;
dprintverbose("start read_file_content");
_ASSERT(hFile != NULL);
_ASSERT(filesize > 0);
_ASSERT(ppbuffer != NULL);
pbuffer = *ppbuffer;
_ASSERT(pbuffer != NULL);
ZeroMemory(&Overlapped, sizeof(OVERLAPPED));
pvread = (char *)pbuffer;
while(coffset < filesize)
{
Overlapped.Offset = (DWORD)coffset;
if(filesize - coffset > READAHEAD_MAXIMUM)
{
readahead = READAHEAD_MAXIMUM;
}
else
{
/*
* we've validated that the difference is safe to cast to
* a 32-bit value before making this assignment.
*/
readahead = (unsigned int)(filesize - coffset);
}
breturn = ReadFile(hFile, pvread, readahead, &readahead, &Overlapped);
if(!breturn)
{
hr = HRESULT_FROM_WIN32(GetLastError());
if(hr != HRESULT_FROM_WIN32(ERROR_IO_PENDING))
{
error_setlasterror();
result = FATAL_FCACHE_READFILE;
goto Finished;
}
hr = S_OK;
breturn = GetOverlappedResult(hFile, &Overlapped, &readahead, TRUE);
if(!breturn)
{
error_setlasterror();
result = FATAL_FCACHE_READFILE;
goto Finished;
}
}
coffset += readahead;
pvread += readahead;
}
_ASSERT(SUCCEEDED(result));
Finished:
if(FAILED(result))
{
dprintimportant("failure %d in read_file_content", result);
}
dprintverbose("end read_file_content");
return result;
}
/* Public methods */
int fcache_create(fcache_context ** ppfcache)
{
int result = NONFATAL;
fcache_context * pfcache = NULL;
dprintverbose("start fcache_create");
_ASSERT(ppfcache != NULL);
*ppfcache = NULL;
pfcache = (fcache_context *)alloc_pemalloc(sizeof(fcache_context));
if(pfcache == NULL)
{
result = FATAL_OUT_OF_LMEMORY;
goto Finished;
}
pfcache->id = gfcacheid++;
pfcache->islocal = 0;
pfcache->cachekey = 0;
pfcache->hinitdone = NULL;
pfcache->maxfsize = 0;
pfcache->memaddr = NULL;
pfcache->header = NULL;
pfcache->pfilemap = NULL;
pfcache->prwlock = NULL;
pfcache->palloc = NULL;
*ppfcache = pfcache;
Finished:
if(FAILED(result))
{
dprintimportant("failure %d in fcache_create", result);
}
dprintverbose("end fcache_create");
return result;
}
void fcache_destroy(fcache_context * pfcache)
{
dprintverbose("start fcache_destroy");
if(pfcache != NULL)
{
alloc_pefree(pfcache);
pfcache = NULL;
}
dprintverbose("end fcache_destroy");
return;
}
int fcache_initialize(fcache_context * pfcache, unsigned short islocal, unsigned short cachekey, unsigned int cachesize, unsigned int maxfsize)
{
int result = NONFATAL;
size_t size = 0;
fcache_header * header = NULL;
unsigned short mapclass = FILEMAP_MAP_SRANDOM;
unsigned short locktype = LOCK_TYPE_SHARED;
unsigned char isfirst = 1;
unsigned char islocked = 0;
unsigned int initmemory = 0;
DWORD ret = 0;
dprintverbose("start fcache_initialize");
_ASSERT(pfcache != NULL);
_ASSERT(cachekey != 0);
_ASSERT(cachesize >= FCACHE_SIZE_MINIMUM && cachesize <= FCACHE_SIZE_MAXIMUM);
_ASSERT(maxfsize >= FILE_SIZE_MINIMUM && maxfsize <= FILE_SIZE_MAXIMUM);
/* Initialize memory map to store code files */
result = filemap_create(&pfcache->pfilemap);
if(FAILED(result))
{
goto Finished;
}
pfcache->cachekey = cachekey;
if(islocal)
{
mapclass = FILEMAP_MAP_LRANDOM;
locktype = LOCK_TYPE_LOCAL;
pfcache->islocal = islocal;
}
/* Create xread xwrite lock for the filecache */
result = lock_create(&pfcache->prwlock);
if(FAILED(result))
{
goto Finished;
}
result = lock_initialize(pfcache->prwlock, "FILECONTENT_CACHE", cachekey, locktype, NULL);
if(FAILED(result))
{
goto Finished;
}
result = utils_create_init_event(pfcache->prwlock->nameprefix, "FCACHE_INIT", &pfcache->hinitdone, &isfirst);
if (FAILED(result))
{
result = FATAL_FCACHE_INIT_EVENT;
goto Finished;
}
islocked = 1;
/* shmfilepath = NULL to use page file for shared memory */
result = filemap_initialize(pfcache->pfilemap, FILEMAP_TYPE_FILECONTENT, cachekey, mapclass, cachesize, isfirst, NULL);
if(FAILED(result))
{
goto Finished;
}
pfcache->memaddr = (char *)pfcache->pfilemap->mapaddr;
size = filemap_getsize(pfcache->pfilemap);
initmemory = (pfcache->pfilemap->existing == 0);
/* Create allocator for filecache segment */
result = alloc_create(&pfcache->palloc);
if(FAILED(result))
{
goto Finished;
}
/* initmemory = 1 for all page file backed shared memory allocators */
result = alloc_initialize(pfcache->palloc, islocal, "FILECONTENT_SEGMENT", cachekey, pfcache->memaddr, size, 1);
if(FAILED(result))
{
goto Finished;
}
/* Get memory for cache header */
pfcache->header = (fcache_header *)alloc_get_cacheheader(pfcache->palloc, sizeof(fcache_header), CACHE_TYPE_FILECONTENT);
if(pfcache->header == NULL)
{
result = FATAL_FCACHE_INITIALIZE;
goto Finished;
}
header = pfcache->header;
/* Initialize the fcache_header if its not initialized already */
if(islocal || isfirst)
{
if (initmemory)
{
/* No need to get a write lock as other processes */
/* are blocked waiting for hinitdone event */
header->mapcount = 1;
header->itemcount = 0;
header->hitcount = 0;
header->misscount = 0;
ReleaseMutex(pfcache->hinitdone);
islocked = 0;
}
}
else
{
/* Increment the mapcount */
InterlockedIncrement(&header->mapcount);
}
/* Keep maxfsize in fcache_context */
pfcache->maxfsize = maxfsize * 1024;
Finished:
if (islocked)
{
ReleaseMutex(pfcache->hinitdone);
islocked = 0;
}
if(FAILED(result))
{
dprintimportant("failure %d in fcache_initialize", result);
if(pfcache->palloc != NULL)
{
alloc_terminate(pfcache->palloc);
alloc_destroy(pfcache->palloc);
pfcache->palloc = NULL;
}
if(pfcache->pfilemap != NULL)
{
filemap_terminate(pfcache->pfilemap);
filemap_destroy(pfcache->pfilemap);
pfcache->pfilemap = NULL;
}
if(pfcache->prwlock != NULL)
{
lock_terminate(pfcache->prwlock);
lock_destroy(pfcache->prwlock);
pfcache->prwlock = NULL;
}
if(pfcache->hinitdone != NULL)
{
CloseHandle(pfcache->hinitdone);
pfcache->hinitdone = NULL;
}
}
dprintverbose("end fcache_initialize");
return result;
}
void fcache_terminate(fcache_context * pfcache)
{
dprintverbose("start fcache_terminate");
if(pfcache != NULL)
{
if(pfcache->header != NULL)
{
InterlockedDecrement(&pfcache->header->mapcount);
pfcache->header = NULL;
}
if(pfcache->palloc != NULL)
{
alloc_terminate(pfcache->palloc);
alloc_destroy(pfcache->palloc);
pfcache->palloc = NULL;
}
if(pfcache->pfilemap != NULL)
{
filemap_terminate(pfcache->pfilemap);
filemap_destroy(pfcache->pfilemap);
pfcache->pfilemap = NULL;
}
if(pfcache->prwlock != NULL)
{
lock_terminate(pfcache->prwlock);
lock_destroy(pfcache->prwlock);
pfcache->prwlock = NULL;
}
if(pfcache->hinitdone != NULL)
{
CloseHandle(pfcache->hinitdone);
pfcache->hinitdone = NULL;
}
}
dprintverbose("end fcache_terminate");
return;
}
int fcache_createval(fcache_context * pfcache, const char * filename, fcache_value ** ppvalue)
{
int result = NONFATAL;
fcache_value * pvalue = NULL;
HANDLE hFile = INVALID_HANDLE_VALUE;
void * buffer = NULL;
unsigned int filesize = 0;
unsigned char * psec = NULL;
unsigned int openflags = 0;
unsigned int attributes = 0;
unsigned int fileflags = 0;
BY_HANDLE_FILE_INFORMATION bhfi = {0};
dprintverbose("start fcache_createval");
_ASSERT(pfcache != NULL);
_ASSERT(filename != NULL);
_ASSERT(ppvalue != NULL);
*ppvalue = NULL;
/* Allocate memory for cache entry in shared memory */
pvalue = (fcache_value *)alloc_smalloc(pfcache->palloc, sizeof(fcache_value));
if(pvalue == NULL)
{
result = FATAL_OUT_OF_SMEMORY;
goto Finished;
}
pvalue->file_sec = 0;
pvalue->file_content = 0;
/* Open the file in shared read mode */
openflags |= FILE_ATTRIBUTE_ENCRYPTED;
openflags |= FILE_FLAG_OVERLAPPED;
openflags |= FILE_FLAG_BACKUP_SEMANTICS;
openflags |= FILE_FLAG_SEQUENTIAL_SCAN;
hFile = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, openflags, NULL);
if(hFile == INVALID_HANDLE_VALUE)
{
error_setlasterror();
result = FATAL_FCACHE_CREATEFILE;
goto Finished;
}
if(!GetFileInformationByHandle(hFile, &bhfi))
{
result = FATAL_FCACHE_BYHANDLE_INFO;
goto Finished;
}
attributes = bhfi.dwFileAttributes;
if(attributes & FILE_ATTRIBUTE_DIRECTORY)
{
fileflags |= FILE_IS_FOLDER;
}
else
{
/* Dont cache files bigger than maxfsize */
if(bhfi.nFileSizeHigh > 0 || bhfi.nFileSizeLow > pfcache->maxfsize)
{
result = WARNING_FCACHE_TOOBIG;
goto Finished;
}
/* File size is just the low file size */
filesize = bhfi.nFileSizeLow;
/* Allocate memory for entire file in shared memory */
buffer = alloc_smalloc(pfcache->palloc, filesize);
if(buffer == NULL)
{
result = FATAL_OUT_OF_SMEMORY;
goto Finished;
}
/* If filesize is greater than 0, read file content */
if(filesize > 0)
{
result = read_file_content(hFile, filesize, &buffer);
if(FAILED(result))
{
goto Finished;
}
}
}
/* Read security information */
result = read_file_security(pfcache, filename, &psec);
if(FAILED(result))
{
goto Finished;
}
fileflags |= FILE_IS_RUNAWARE;
fileflags |= FILE_IS_WUNAWARE;
pvalue->file_size = filesize;
pvalue->file_sec = psec - pfcache->memaddr;
pvalue->file_content = ((buffer == NULL) ? 0 : ((char *)buffer - pfcache->memaddr));
pvalue->file_flags = fileflags;
pvalue->is_deleted = 0;
pvalue->hitcount = 0;
pvalue->refcount = 0;
InterlockedIncrement(&pfcache->header->itemcount);
InterlockedIncrement(&pfcache->header->misscount);
/* Decrement the hitcounts here. They will be incremented*/
/* back in refinc so that hitcount remains the same */
InterlockedDecrement(&pfcache->header->hitcount);
InterlockedDecrement(&pvalue->hitcount);
*ppvalue = pvalue;
_ASSERT(SUCCEEDED(result));
Finished:
if(hFile != INVALID_HANDLE_VALUE)
{
CloseHandle(hFile);
hFile = INVALID_HANDLE_VALUE;
}
if(FAILED(result))
{
dprintverbose("failure %d in fcache_createval", result);
if(buffer != NULL)
{
alloc_sfree(pfcache->palloc, buffer);
buffer = NULL;
}
if(psec != NULL)
{
alloc_sfree(pfcache->palloc, psec);
psec = NULL;
}
if(pvalue != NULL)
{
pvalue->file_sec = 0;
pvalue->file_content = 0;
alloc_sfree(pfcache->palloc, pvalue);
pvalue = NULL;
}
}
dprintverbose("end fcache_createval");
return result;
}
void fcache_destroyval(fcache_context * pfcache, fcache_value * pvalue)
{
dprintverbose("start fcache_destroyval");
_ASSERT(pvalue->refcount == 0);
if(pvalue != NULL)
{
if(pvalue->file_sec != 0)
{
alloc_sfree(pfcache->palloc, pfcache->memaddr + pvalue->file_sec);
pvalue->file_sec = 0;
}
if(pvalue->file_content != 0)
{
alloc_sfree(pfcache->palloc, pfcache->memaddr + pvalue->file_content);
pvalue->file_content = 0;
}
alloc_sfree(pfcache->palloc, pvalue);
pvalue = NULL;
InterlockedDecrement(&pfcache->header->itemcount);
}
dprintverbose("end fcache_destroyval");
return;
}
int fcache_useval(fcache_context * pcache, const char * filename, fcache_value * pvalue, zend_file_handle ** pphandle)
{
int result = NONFATAL;
int allocated = 0;
zend_file_handle * phandle = NULL;
fcache_handle * fhandle = NULL;
dprintverbose("start fcache_useval");
_ASSERT(filename != NULL);
_ASSERT(pvalue != NULL);
_ASSERT(pphandle != NULL);
if(*pphandle == NULL)
{
phandle = (zend_file_handle *)alloc_emalloc(sizeof(zend_file_handle));
if(phandle == NULL)
{
result = FATAL_OUT_OF_LMEMORY;
goto Finished;
}
allocated = 1;
}
else
{
phandle = *pphandle;
}
/* Allocate memory for fcache_handle. Release memory in fcache_closer */
fhandle = (fcache_handle *)alloc_emalloc(sizeof(fcache_handle));
if(fhandle == NULL)
{
result = FATAL_OUT_OF_LMEMORY;
goto Finished;
}
phandle->filename = (char *)filename;
phandle->free_filename = 0;
phandle->opened_path = zend_string_init(filename, strlen(filename), 0);
ZeroMemory(&phandle->handle.stream, sizeof(zend_stream));
phandle->handle.stream.reader = (zend_stream_reader_t)fcache_reader;
phandle->handle.stream.closer = (zend_stream_closer_t)fcache_closer;
phandle->handle.stream.fsizer = (zend_stream_fsizer_t)fcache_fsizer;
fhandle->pfcache = pcache;
fhandle->pfvalue = pvalue;
fhandle->map = (void *)(pcache->memaddr + pvalue->file_content);
fhandle->buf = pcache->memaddr + pvalue->file_content;
fhandle->len = pvalue->file_size;
fhandle->pos = 0;
/* Init the php_handle in the fcache_handle object */
fcache_init_php_handle(fhandle);
phandle->handle.stream.handle = fhandle;
phandle->type = ZEND_HANDLE_STREAM;
*pphandle = phandle;
_ASSERT(SUCCEEDED(result));
Finished:
if(FAILED(result))
{
dprintimportant("failure %d in fcache_useval", result);
if(fhandle != NULL)
{
alloc_efree(fhandle);
fhandle = NULL;
}
if(phandle != NULL && allocated == 1)
{
alloc_efree(phandle);
phandle = NULL;
}
}
dprintverbose("end fcache_useval");
return result;
}
fcache_value * fcache_getvalue(fcache_context * pfcache, size_t offset)
{
_ASSERT(pfcache != NULL);
return ((offset != 0) ? ((fcache_value *)(pfcache->memaddr + offset)) : NULL);
}
size_t fcache_getoffset(fcache_context * pfcache, fcache_value * pvalue)
{
_ASSERT(pfcache != NULL);
return ((pvalue != NULL) ? ((char *)pvalue - pfcache->memaddr) : 0);
}
void fcache_refinc(fcache_context * pfcache, fcache_value * pvalue)
{
_ASSERT(pfcache != NULL);
_ASSERT(pvalue != NULL);
InterlockedIncrement(&pvalue->refcount);
InterlockedIncrement(&pvalue->hitcount);
InterlockedIncrement(&pfcache->header->hitcount);
return;
}
void fcache_refdec(fcache_context * pfcache, fcache_value * pvalue)
{
_ASSERT(pfcache != NULL);
_ASSERT(pvalue != NULL);
InterlockedDecrement(&pvalue->refcount);
if(InterlockedCompareExchange(&pvalue->is_deleted, 1, 1) == 1 &&
InterlockedCompareExchange(&pvalue->refcount, 0, 0) == 0)
{
fcache_destroyval(pfcache, pvalue);
pvalue = NULL;
}
return;
}
int fcache_getinfo(fcache_value * pvalue, fcache_entry_info ** ppinfo)
{
int result = NONFATAL;
fcache_entry_info * pinfo = NULL;
dprintverbose("start fcache_getinfo");
_ASSERT(pvalue != NULL);
_ASSERT(ppinfo != NULL);
*ppinfo = NULL;
pinfo = (fcache_entry_info *)alloc_emalloc(sizeof(fcache_entry_info));
if(pinfo == NULL)
{
result = FATAL_OUT_OF_LMEMORY;
goto Finished;
}
pinfo->filesize = pvalue->file_size;
pinfo->hitcount = pvalue->hitcount;
*ppinfo = pinfo;
_ASSERT(SUCCEEDED(result));
Finished:
if(FAILED(result))
{
dprintimportant("failure %d in fcache_getinfo", result);
}
dprintverbose("end fcache_getinfo");
return result;
}
void fcache_freeinfo(fcache_entry_info * pinfo)
{
if(pinfo != NULL)
{
alloc_efree(pinfo);
pinfo = NULL;
}
return;
}
size_t fcache_fsizer(void * handle)
{
size_t size = 0;
fcache_handle * fhandle = NULL;
dprintverbose("start fcache_fsizer");
_ASSERT(handle != NULL);
fhandle = (fcache_handle *)handle;
size = fhandle->len;
dprintverbose("end fcache_fsizer");
return size;
}
size_t fcache_reader(void * handle, char * buf, size_t length)
{
size_t size = 0;
fcache_handle * fhandle = NULL;
fcache_value * pvalue = NULL;
size_t bleft = 0;
dprintverbose("start fcache_reader");
_ASSERT(handle != NULL);
_ASSERT(buf != NULL);
fhandle = (fcache_handle *)handle;
pvalue = fhandle->pfvalue;
_ASSERT(fhandle->len == pvalue->file_size);
/* Read either length bytes or the number of bytes left */
bleft = fhandle->len - fhandle->pos;
if(bleft > length)
{
size = length;
}
else
{
size = bleft;
}
/* Copy characters from file buffer to buffer */
/* and update current position and buffer pointer */
memcpy_s(buf, size, fhandle->buf, size);
fhandle->pos += size;
fhandle->buf += size;
dprintverbose("end fcache_reader");
return size;
}
void fcache_closer(void * handle)
{
fcache_handle * fhandle = NULL;
dprintverbose("start fcache_closer");
_ASSERT(handle != NULL);
/* Just decrement the refcount. Scavenger will remove the entry */
fhandle = (fcache_handle *)handle;
fcache_refdec(fhandle->pfcache, fhandle->pfvalue);
/* Free memory allocated for fcache_handle */
alloc_efree(fhandle);
fhandle = handle = NULL;
dprintverbose("end fcache_closer");
return;
}
void fcache_runtest()
{
int result = NONFATAL;
fcache_context * pfcache = NULL;
fcache_value * pvalue = NULL;
unsigned char islocal = 0;
unsigned int cachesize = 32;
unsigned int maxfsize = 250;
char * filename = "testfile.php";
dprintverbose("*** STARTING FCACHE TESTS ***");
result = fcache_create(&pfcache);
if(FAILED(result))
{
goto Finished;
}
result = fcache_initialize(pfcache, islocal, 57, cachesize, maxfsize);
if(FAILED(result))
{
goto Finished;
}
_ASSERT(pfcache->id != 0);
_ASSERT(pfcache->maxfsize == maxfsize * 1024);
_ASSERT(pfcache->header != NULL);
_ASSERT(pfcache->pfilemap != NULL);
_ASSERT(pfcache->prwlock != NULL);
_ASSERT(pfcache->palloc != NULL);
_ASSERT(pfcache->header->itemcount == 0);
_ASSERT(pfcache->header->hitcount == 0);
_ASSERT(pfcache->header->misscount == 0);
Finished:
if(pfcache != NULL)
{
fcache_terminate(pfcache);
fcache_destroy(pfcache);
pfcache = NULL;
}
dprintverbose("*** ENDING FCACHE TESTS ***");
return;
}
/*
* php_stream_ops functions
*/
size_t wincache_stream_write(php_stream *stream, const char *buf, size_t count)
{
/* ignore writes */
return 0;
}
size_t wincache_stream_read(php_stream *stream, char *buf, size_t count)
{
size_t toread = 0;
toread = stream->writepos - stream->readpos;
if (toread > count)
{
toread = count;
}
if (count == 0)
{
return 0;
}
memcpy_s(buf, toread, stream->readbuf + stream->readpos, toread);
stream->readpos += toread;
stream->position = stream->readpos;
/* Check if we're at EOF */
if (stream->readpos == stream->writepos)
{
stream->eof = 1;
}
else
{
stream->eof = 0;
}
return toread;
}
int wincache_stream_close(php_stream *stream, int close_handle)
{
/* ignore close */