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Diffstat (limited to 'erts/emulator/sys/win32/sys.c')
-rwxr-xr-xerts/emulator/sys/win32/sys.c143
1 files changed, 46 insertions, 97 deletions
diff --git a/erts/emulator/sys/win32/sys.c b/erts/emulator/sys/win32/sys.c
index b106f0932d..c4861b92a2 100755
--- a/erts/emulator/sys/win32/sys.c
+++ b/erts/emulator/sys/win32/sys.c
@@ -87,9 +87,6 @@ static erts_smp_tsd_key_t win32_errstr_key;
static erts_smp_atomic_t pipe_creation_counter;
-static erts_smp_mtx_t sys_driver_data_lock;
-
-
/* Results from application_type(_w) is one of */
#define APPL_NONE 0
#define APPL_DOS 1
@@ -97,7 +94,6 @@ static erts_smp_mtx_t sys_driver_data_lock;
#define APPL_WIN32 3
static int driver_write(long, HANDLE, byte*, int);
-static void common_stop(int);
static int create_file_thread(struct async_io* aio, int mode);
#ifdef ERTS_SMP
static void close_active_handle(ErlDrvPort, HANDLE handle);
@@ -115,9 +111,6 @@ BOOL WINAPI ctrl_handler(DWORD dwCtrlType);
#define PORT_BUFSIZ 4096
-#define PORT_FREE (-1)
-#define PORT_EXITING (-2)
-
#define DRV_BUF_ALLOC(SZ) \
erts_alloc_fnf(ERTS_ALC_T_DRV_DATA_BUF, (SZ))
#define DRV_BUF_REALLOC(P, SZ) \
@@ -454,7 +447,7 @@ typedef struct driver_data {
byte *inbuf; /* Buffer to use for overlapped read. */
int outBufSize; /* Size of output buffer. */
byte *outbuf; /* Buffer to use for overlapped write. */
- ErlDrvPort port_num; /* The port number. */
+ ErlDrvPort port_num; /* The port handle. */
int packet_bytes; /* 0: continous stream, 1, 2, or 4: the number
* of bytes in the packet header.
*/
@@ -464,8 +457,6 @@ typedef struct driver_data {
int report_exit; /* Do report exit status for the port */
} DriverData;
-static DriverData* driver_data; /* Pointer to array of driver data. */
-
/* Driver interfaces */
static ErlDrvData spawn_start(ErlDrvPort, char*, SysDriverOpts*);
static ErlDrvData fd_start(ErlDrvPort, char*, SysDriverOpts*);
@@ -577,67 +568,53 @@ struct erl_drv_entry vanilla_driver_entry = {
*/
static DriverData*
-new_driver_data(int port_num, int packet_bytes, int wait_objs_required, int use_threads)
+new_driver_data(ErlDrvPort port_num, int packet_bytes, int wait_objs_required, int use_threads)
{
DriverData* dp;
-
- erts_smp_mtx_lock(&sys_driver_data_lock);
- DEBUGF(("new_driver_data(port_num %d, pb %d)\n",
- port_num, packet_bytes));
+ DEBUGF(("new_driver_data(%p, pb %d)\n", port_num, packet_bytes));
+ dp = driver_alloc(sizeof(DriverData));
+ if (!dp)
+ return NULL;
/*
* We used to test first at all that there is enough room in the
* array used by WaitForMultipleObjects(), but that is not necessary
* any more, since driver_select() can't fail.
*/
- /*
- * Search for a free slot.
- */
+ dp->bytesInBuffer = 0;
+ dp->totalNeeded = packet_bytes;
+ dp->inBufSize = PORT_BUFSIZ;
+ dp->inbuf = DRV_BUF_ALLOC(dp->inBufSize);
+ if (dp->inbuf == NULL)
+ goto buf_alloc_error;
+ erts_smp_atomic_add_nob(&sys_misc_mem_sz, dp->inBufSize);
+ dp->outBufSize = 0;
+ dp->outbuf = NULL;
+ dp->port_num = port_num;
+ dp->packet_bytes = packet_bytes;
+ dp->port_pid = INVALID_HANDLE_VALUE;
+ if (init_async_io(&dp->in, use_threads) == -1)
+ goto async_io_error1;
+ if (init_async_io(&dp->out, use_threads) == -1)
+ goto async_io_error2;
- for (dp = driver_data; dp < driver_data+max_files; dp++) {
- if (dp->port_num == PORT_FREE) {
- dp->bytesInBuffer = 0;
- dp->totalNeeded = packet_bytes;
- dp->inBufSize = PORT_BUFSIZ;
- dp->inbuf = DRV_BUF_ALLOC(dp->inBufSize);
- if (dp->inbuf == NULL) {
- erts_smp_mtx_unlock(&sys_driver_data_lock);
- return NULL;
- }
- erts_smp_atomic_add_nob(&sys_misc_mem_sz, dp->inBufSize);
- dp->outBufSize = 0;
- dp->outbuf = NULL;
- dp->port_num = port_num;
- dp->packet_bytes = packet_bytes;
- dp->port_pid = INVALID_HANDLE_VALUE;
- if (init_async_io(&dp->in, use_threads) == -1)
- break;
- if (init_async_io(&dp->out, use_threads) == -1)
- break;
- erts_smp_mtx_unlock(&sys_driver_data_lock);
- return dp;
- }
- }
+ return dp;
- /*
- * Error or no free driver data.
- */
+async_io_error2:
+ release_async_io(&dp->in, dp->port_num);
+async_io_error1:
+ release_async_io(&dp->out, dp->port_num);
- if (dp < driver_data+max_files) {
- release_async_io(&dp->in, dp->port_num);
- release_async_io(&dp->out, dp->port_num);
- }
- erts_smp_mtx_unlock(&sys_driver_data_lock);
+buf_alloc_error:
+ driver_free(dp);
return NULL;
}
static void
release_driver_data(DriverData* dp)
{
- erts_smp_mtx_lock(&sys_driver_data_lock);
-
#ifdef ERTS_SMP
#ifdef USE_CANCELIOEX
if (fpCancelIoEx != NULL) {
@@ -721,8 +698,7 @@ release_driver_data(DriverData* dp)
* the exit thread.
*/
- dp->port_num = PORT_FREE;
- erts_smp_mtx_unlock(&sys_driver_data_lock);
+ driver_free(dp);
}
#ifdef ERTS_SMP
@@ -817,7 +793,6 @@ threaded_handle_closer(LPVOID param)
static ErlDrvData
set_driver_data(DriverData* dp, HANDLE ifd, HANDLE ofd, int read_write, int report_exit)
{
- int index = dp - driver_data;
int result;
dp->in.fd = ifd;
@@ -836,13 +811,12 @@ set_driver_data(DriverData* dp, HANDLE ifd, HANDLE ofd, int read_write, int repo
ERL_DRV_WRITE|ERL_DRV_USE, 1);
ASSERT(result != -1);
}
- return (ErlDrvData)index;
+ return (ErlDrvData) dp;
}
static ErlDrvData
reuse_driver_data(DriverData *dp, HANDLE ifd, HANDLE ofd, int read_write, ErlDrvPort port_num)
{
- int index = dp - driver_data;
int result;
dp->port_num = port_num;
@@ -861,7 +835,7 @@ reuse_driver_data(DriverData *dp, HANDLE ifd, HANDLE ofd, int read_write, ErlDrv
ERL_DRV_WRITE|ERL_DRV_USE, 1);
ASSERT(result != -1);
}
- return (ErlDrvData)index;
+ return (ErlDrvData) dp;
}
/*
@@ -1118,12 +1092,6 @@ spawn_init(void)
((module != NULL) ? GetProcAddress(module,"CancelIoEx") : NULL);
DEBUGF(("fpCancelIoEx = %p\r\n", fpCancelIoEx));
#endif
- driver_data = (struct driver_data *)
- erts_alloc(ERTS_ALC_T_DRV_TAB, max_files * sizeof(struct driver_data));
- erts_smp_atomic_add_nob(&sys_misc_mem_sz,
- max_files*sizeof(struct driver_data));
- for (i = 0; i < max_files; i++)
- driver_data[i].port_num = PORT_FREE;
return 0;
}
@@ -2187,12 +2155,10 @@ fd_start(ErlDrvPort port_num, char* name, SysDriverOpts* opts)
return ERL_DRV_ERROR_GENERAL;
if (!create_file_thread(&dp->in, DO_READ)) {
- dp->port_num = PORT_FREE;
return ERL_DRV_ERROR_GENERAL;
}
if (!create_file_thread(&dp->out, DO_WRITE)) {
- dp->port_num = PORT_FREE;
return ERL_DRV_ERROR_GENERAL;
}
@@ -2212,10 +2178,9 @@ fd_start(ErlDrvPort port_num, char* name, SysDriverOpts* opts)
}
}
-static void fd_stop(ErlDrvData d)
+static void fd_stop(ErlDrvData data)
{
- int fd = (int)d;
- DriverData* dp = driver_data+fd;
+ DriverData * dp = (DriverData *) data;
/*
* There's no way we can terminate an fd port in a consistent way.
* Instead we let it live until it's opened again (which it is,
@@ -2276,16 +2241,10 @@ vanilla_start(ErlDrvPort port_num, char* name, SysDriverOpts* opts)
}
static void
-stop(ErlDrvData index)
-{
- common_stop((int)index);
-}
-
-static void common_stop(int index)
+stop(ErlDrvData data)
{
- DriverData* dp = driver_data+index;
-
- DEBUGF(("common_stop(%d)\n", index));
+ DriverData *dp = (DriverData *) data;
+ DEBUGF(("stop(%p)\n", dp));
if (dp->in.ov.hEvent != NULL) {
(void) driver_select(dp->port_num,
@@ -2307,7 +2266,6 @@ static void common_stop(int index)
*/
HANDLE thread;
DWORD tid;
- dp->port_num = PORT_EXITING;
thread = (HANDLE *) _beginthreadex(NULL, 0, threaded_exiter, dp, 0, &tid);
CloseHandle(thread);
}
@@ -2432,22 +2390,17 @@ threaded_exiter(LPVOID param)
static void
output(ErlDrvData drv_data, char* buf, ErlDrvSizeT len)
-/* long drv_data; /* The slot to use in the driver data table.
+/* ErlDrvData drv_data; /* The slot to use in the driver data table.
* For Windows NT, this is *NOT* a file handle.
* The handle is found in the driver data.
*/
/* char *buf; /* Pointer to data to write to the port program. */
/* ErlDrvSizeT len; /* Number of bytes to write. */
{
- DriverData* dp;
+ DriverData* dp = (DriverData *) drv_data;
int pb; /* The header size for this port. */
- int port_num; /* The actual port number (for diagnostics). */
char* current;
- dp = driver_data + (int)drv_data;
- if ((port_num = dp->port_num) == -1)
- return ; /*-1;*/
-
pb = dp->packet_bytes;
if ((pb+len) == 0)
@@ -2458,7 +2411,7 @@ output(ErlDrvData drv_data, char* buf, ErlDrvSizeT len)
*/
if ((pb == 2 && len > 65535) || (pb == 1 && len > 255)) {
- driver_failure_posix(port_num, EINVAL);
+ driver_failure_posix(dp->port_num, EINVAL);
return ; /* -1; */
}
@@ -2472,7 +2425,7 @@ output(ErlDrvData drv_data, char* buf, ErlDrvSizeT len)
ASSERT(!dp->outbuf);
dp->outbuf = DRV_BUF_ALLOC(pb+len);
if (!dp->outbuf) {
- driver_failure_posix(port_num, ENOMEM);
+ driver_failure_posix(dp->port_num, ENOMEM);
return ; /* -1; */
}
@@ -2502,7 +2455,7 @@ output(ErlDrvData drv_data, char* buf, ErlDrvSizeT len)
memcpy(current, buf, len);
if (!async_write_file(&dp->out, dp->outbuf, pb+len)) {
- set_busy_port(port_num, 1);
+ set_busy_port(dp->port_num, 1);
} else {
dp->out.ov.Offset += pb+len; /* For vanilla driver. */
/* XXX OffsetHigh should be changed too. */
@@ -2537,10 +2490,9 @@ ready_input(ErlDrvData drv_data, ErlDrvEvent ready_event)
{
int error = 0; /* The error code (assume initially no errors). */
DWORD bytesRead; /* Number of bytes read. */
- DriverData* dp;
+ DriverData* dp = (DriverData *) drv_data;
int pb;
- dp = driver_data+(int)drv_data;
pb = dp->packet_bytes;
#ifdef ERTS_SMP
if(dp->in.thread == (HANDLE) -1) {
@@ -2708,7 +2660,7 @@ static void
ready_output(ErlDrvData drv_data, ErlDrvEvent ready_event)
{
DWORD bytesWritten;
- DriverData* dp = driver_data + (int)drv_data;
+ DriverData *dp = (DriverData *) drv_data;
int error;
#ifdef ERTS_SMP
@@ -2716,7 +2668,7 @@ ready_output(ErlDrvData drv_data, ErlDrvEvent ready_event)
dp->out.async_io_active = 0;
}
#endif
- DEBUGF(("ready_output(%d, 0x%x)\n", drv_data, ready_event));
+ DEBUGF(("ready_output(%p, 0x%x)\n", drv_data, ready_event));
set_busy_port(dp->port_num, 0);
if (!(dp->outbuf)) {
/* Happens because event sometimes get signalled during a successful
@@ -2771,7 +2723,7 @@ sys_init_io(void)
can change our view of the number of open files possible.
We estimate the number to twice the amount of ports.
We really dont know on windows, do we? */
- max_files = 2*erts_max_ports;
+ max_files = 2*erts_ptab_max(&erts_port);
}
#ifdef ERTS_SMP
@@ -3225,9 +3177,6 @@ void erl_sys_init(void)
noinherit_std_handle(STD_INPUT_HANDLE);
noinherit_std_handle(STD_ERROR_HANDLE);
-
- erts_smp_mtx_init(&sys_driver_data_lock, "sys_driver_data_lock");
-
#ifdef ERTS_SMP
erts_smp_tsd_key_create(&win32_errstr_key);
InitializeCriticalSection(&htbc_lock);