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msvcrt: Allocate FILE tables dynamically.

This commit is contained in:
Piotr Caban 2011-05-19 15:31:22 +02:00 committed by Alexandre Julliard
parent 2679186d19
commit 19c4c37a1d
1 changed files with 76 additions and 30 deletions
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104
dlls/msvcrt/file.c
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@ -41,6 +41,7 @@
#include "winbase.h"
#include "winternl.h"
#include "msvcrt.h"
#include "mtdll.h"
#include "wine/unicode.h"
@ -90,13 +91,17 @@ ioinfo * MSVCRT___pioinfo[MSVCRT_MAX_FILES/MSVCRT_FD_BLOCK_SIZE] = { 0 };
*/
ioinfo MSVCRT___badioinfo = { INVALID_HANDLE_VALUE, WX_TEXT };
MSVCRT_FILE MSVCRT__iob[3] = { { 0 } };
static int MSVCRT_fdstart = 3; /* first unallocated fd */
static int MSVCRT_fdend = 3; /* highest allocated fd */
static MSVCRT_FILE* MSVCRT_fstreams[2048];
static int MSVCRT_stream_idx;
typedef struct {
MSVCRT_FILE file;
CRITICAL_SECTION crit;
} file_crit;
MSVCRT_FILE MSVCRT__iob[_IOB_ENTRIES] = { { 0 } };
static file_crit* MSVCRT_fstream[MSVCRT_MAX_FILES/MSVCRT_FD_BLOCK_SIZE];
static int MSVCRT_max_streams = 512, MSVCRT_stream_idx;
/* INTERNAL: process umask */
static int MSVCRT_umask = 0;
@ -179,6 +184,32 @@ static inline ioinfo* msvcrt_get_ioinfo(int fd)
return ret + (fd%MSVCRT_FD_BLOCK_SIZE);
}
static inline MSVCRT_FILE* msvcrt_get_file(int i)
{
file_crit *ret;
if(i >= MSVCRT_max_streams)
return NULL;
if(i < _IOB_ENTRIES)
return &MSVCRT__iob[i];
ret = MSVCRT_fstream[i/MSVCRT_FD_BLOCK_SIZE];
if(!ret) {
MSVCRT_fstream[i/MSVCRT_FD_BLOCK_SIZE] = MSVCRT_calloc(MSVCRT_FD_BLOCK_SIZE, sizeof(file_crit));
if(!MSVCRT_fstream[i/MSVCRT_FD_BLOCK_SIZE]) {
ERR("out of memory");
*MSVCRT__errno() = MSVCRT_ENOMEM;
return NULL;
}
ret = MSVCRT_fstream[i/MSVCRT_FD_BLOCK_SIZE] + (i%MSVCRT_FD_BLOCK_SIZE);
} else
ret += i%MSVCRT_FD_BLOCK_SIZE;
return &ret->file;
}
static inline BOOL msvcrt_is_valid_fd(int fd)
{
return fd >= 0 && fd < MSVCRT_fdend && (msvcrt_get_ioinfo(fd)->wxflag & WX_OPEN);
@ -316,20 +347,21 @@ static int msvcrt_alloc_fd(HANDLE hand, int flag)
static MSVCRT_FILE* msvcrt_alloc_fp(void)
{
unsigned int i;
MSVCRT_FILE *file;
for (i = 3; i < sizeof(MSVCRT_fstreams) / sizeof(MSVCRT_fstreams[0]); i++)
for (i = 3; i < MSVCRT_max_streams; i++)
{
if (!MSVCRT_fstreams[i] || MSVCRT_fstreams[i]->_flag == 0)
{
if (!MSVCRT_fstreams[i])
{
if (!(MSVCRT_fstreams[i] = MSVCRT_calloc(sizeof(MSVCRT_FILE),1)))
file = msvcrt_get_file(i);
if (!file)
return NULL;
if (file->_flag == 0)
{
if (i == MSVCRT_stream_idx) MSVCRT_stream_idx++;
}
return MSVCRT_fstreams[i];
return file;
}
}
return NULL;
}
@ -471,7 +503,6 @@ void msvcrt_init_io(void)
for (i = 0; i < 3; i++)
{
/* FILE structs for stdin/out/err are static and never deleted */
MSVCRT_fstreams[i] = &MSVCRT__iob[i];
MSVCRT__iob[i]._file = i;
MSVCRT__iob[i]._tmpfname = NULL;
MSVCRT__iob[i]._flag = (i == 0) ? MSVCRT__IOREAD : MSVCRT__IOWRT;
@ -715,22 +746,20 @@ int CDECL MSVCRT_fflush(MSVCRT_FILE* file);
int CDECL _flushall(void)
{
int i, num_flushed = 0;
MSVCRT_FILE *file;
LOCK_FILES();
for (i = 3; i < MSVCRT_stream_idx; i++)
if (MSVCRT_fstreams[i] && MSVCRT_fstreams[i]->_flag)
for (i = 3; i < MSVCRT_stream_idx; i++) {
file = msvcrt_get_file(i);
if (file->_flag)
{
#if 0
/* FIXME: flush, do not commit */
if (_commit(i) == -1)
if (MSVCRT_fstreams[i])
MSVCRT_fstreams[i]->_flag |= MSVCRT__IOERR;
#endif
if(MSVCRT_fstreams[i]->_flag & MSVCRT__IOWRT) {
MSVCRT_fflush(MSVCRT_fstreams[i]);
if(file->_flag & MSVCRT__IOWRT) {
MSVCRT_fflush(file);
num_flushed++;
}
}
}
UNLOCK_FILES();
TRACE(":flushed (%d) handles\n",num_flushed);
@ -913,12 +942,15 @@ int CDECL _eof(int fd)
int CDECL MSVCRT__fcloseall(void)
{
int num_closed = 0, i;
MSVCRT_FILE *file;
LOCK_FILES();
for (i = 3; i < MSVCRT_stream_idx; i++)
if (MSVCRT_fstreams[i] && MSVCRT_fstreams[i]->_flag &&
!MSVCRT_fclose(MSVCRT_fstreams[i]))
for (i = 3; i < MSVCRT_stream_idx; i++) {
file = msvcrt_get_file(i);
if (file->_flag && !MSVCRT_fclose(file))
num_closed++;
}
UNLOCK_FILES();
TRACE(":closed (%d) handles\n",num_closed);
@ -942,6 +974,9 @@ void msvcrt_free_io(void)
for(i=0; i<sizeof(MSVCRT___pioinfo)/sizeof(MSVCRT___pioinfo[0]); i++)
MSVCRT_free(MSVCRT___pioinfo[i]);
for(i=0; i<sizeof(MSVCRT_fstream)/sizeof(MSVCRT_fstream[0]); i++)
MSVCRT_free(MSVCRT_fstream[i]);
MSVCRT_file_cs.DebugInfo->Spare[0] = 0;
DeleteCriticalSection(&MSVCRT_file_cs);
}
@ -1927,14 +1962,18 @@ int CDECL _open_osfhandle(MSVCRT_intptr_t handle, int oflags)
int CDECL _rmtmp(void)
{
int num_removed = 0, i;
MSVCRT_FILE *file;
LOCK_FILES();
for (i = 3; i < MSVCRT_stream_idx; i++)
if (MSVCRT_fstreams[i] && MSVCRT_fstreams[i]->_tmpfname)
for (i = 3; i < MSVCRT_stream_idx; i++) {
file = msvcrt_get_file(i);
if (file->_tmpfname)
{
MSVCRT_fclose(MSVCRT_fstreams[i]);
MSVCRT_fclose(file);
num_removed++;
}
}
UNLOCK_FILES();
if (num_removed)
@ -2517,6 +2556,13 @@ int CDECL MSVCRT_fclose(MSVCRT_FILE* file)
file->_flag = 0;
if(file == msvcrt_get_file(MSVCRT_stream_idx-1)) {
while(MSVCRT_stream_idx>3 && !file->_flag) {
MSVCRT_stream_idx--;
file = msvcrt_get_file(MSVCRT_stream_idx-1);
}
}
return ((r == -1) || (flag & MSVCRT__IOERR) ? MSVCRT_EOF : 0);
}