diff options
| -rw-r--r-- | erts/emulator/beam/sys.h | 4 | ||||
| -rw-r--r-- | erts/emulator/sys/win32/sys.c | 203 |
2 files changed, 118 insertions, 89 deletions
diff --git a/erts/emulator/beam/sys.h b/erts/emulator/beam/sys.h index ff828ae889..e64c43de6e 100644 --- a/erts/emulator/beam/sys.h +++ b/erts/emulator/beam/sys.h @@ -538,8 +538,8 @@ typedef struct preload { */ typedef struct _SysDriverOpts { - int ifd; /* Input file descriptor (fd driver). */ - int ofd; /* Outputfile descriptor (fd driver). */ + Uint ifd; /* Input file descriptor (fd driver). */ + Uint ofd; /* Outputfile descriptor (fd driver). */ int packet_bytes; /* Number of bytes in packet header. */ int read_write; /* Read and write bits. */ int use_stdio; /* Use standard I/O: TRUE or FALSE. */ diff --git a/erts/emulator/sys/win32/sys.c b/erts/emulator/sys/win32/sys.c index 37041ed987..a2159d063c 100644 --- a/erts/emulator/sys/win32/sys.c +++ b/erts/emulator/sys/win32/sys.c @@ -1,7 +1,7 @@ /* * %CopyrightBegin% * - * Copyright Ericsson AB 1996-2010. All Rights Reserved. + * Copyright Ericsson AB 1996-2011. All Rights Reserved. * * The contents of this file are subject to the Erlang Public License, * Version 1.1, (the "License"); you may not use this file except in @@ -75,7 +75,7 @@ static int create_pipe(LPHANDLE, LPHANDLE, BOOL, BOOL); static int application_type(const char* originalName, char fullPath[MAX_PATH], BOOL search_in_path, BOOL handle_quotes, int *error_return); -static int application_type_w(const char* originalName, WCHAR fullPath[MAX_PATH], +static int application_type_w(const WCHAR *originalName, WCHAR fullPath[MAX_PATH], BOOL search_in_path, BOOL handle_quotes, int *error_return); @@ -260,7 +260,7 @@ erts_sys_prepare_crash_dump(void) } static void -init_console() +init_console(void) { char* mode = erts_read_env("ERL_CONSOLE_MODE"); @@ -280,7 +280,7 @@ init_console() erts_free_read_env(mode); } -int sys_max_files() +int sys_max_files(void) { return max_files; } @@ -296,10 +296,7 @@ int sys_max_files() */ static int -get_and_remove_option(argc, argv, option) - int* argc; /* Number of arguments. */ - char* argv[]; /* The argument vector. */ - const char* option; /* Option to search for and remove. */ +get_and_remove_option(int* argc, char* argv[], const char *option) { int i; @@ -349,9 +346,7 @@ static char *get_and_remove_option2(int *argc, char **argv, char os_type[] = "win32"; void -os_flavor(namebuf, size) -char* namebuf; /* Where to return the name. */ -unsigned size; /* Size of name buffer. */ +os_flavor(char *namebuf, unsigned size) { switch (int_os_version.dwPlatformId) { case VER_PLATFORM_WIN32_WINDOWS: @@ -624,12 +619,7 @@ struct erl_drv_entry async_driver_entry = { */ static DriverData* -new_driver_data(port_num, packet_bytes, wait_objs_required, use_threads) - int port_num; /* The port number. */ - int packet_bytes; /* Number of bytes in header. */ - int wait_objs_required; /* The number objects this port is going - /* wait for (typically 1 or 2). */ - int use_threads; /* TRUE if threads are intended to be used. */ +new_driver_data(int port_num, int packet_bytes, int wait_objs_required, int use_threads) { DriverData* dp; @@ -867,12 +857,7 @@ threaded_handle_closer(LPVOID param) */ static ErlDrvData -set_driver_data(dp, ifd, ofd, read_write, report_exit) - DriverData* dp; - HANDLE ifd; - HANDLE ofd; - int read_write; - int report_exit; +set_driver_data(DriverData* dp, HANDLE ifd, HANDLE ofd, int read_write, int report_exit) { int index = dp - driver_data; int result; @@ -896,6 +881,31 @@ set_driver_data(dp, ifd, ofd, read_write, report_exit) return (ErlDrvData)index; } +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; + dp->in.fd = ifd; + dp->out.fd = ofd; + dp->report_exit = 0; + + if (read_write & DO_READ) { + result = driver_select(dp->port_num, (ErlDrvEvent)dp->in.ov.hEvent, + ERL_DRV_READ|ERL_DRV_USE, 1); + ASSERT(result != -1); + } + + if (read_write & DO_WRITE) { + result = driver_select(dp->port_num, (ErlDrvEvent)dp->out.ov.hEvent, + ERL_DRV_WRITE|ERL_DRV_USE, 1); + ASSERT(result != -1); + } + return (ErlDrvData)index; +} + /* * Initialises an AsyncIo structure. */ @@ -969,10 +979,7 @@ release_async_io(AsyncIo* aio, ErlDrvPort port_num) */ static void -async_read_file(aio, buf, numToRead) - AsyncIo* aio; /* Pointer to driver data. */ - LPVOID buf; /* Pointer to buffer to receive data. */ - DWORD numToRead; /* Number of bytes to read. */ +async_read_file(AsyncIo* aio, LPVOID buf, DWORD numToRead) { aio->pendingError = NO_ERROR; #ifdef HARD_POLL_DEBUG @@ -1023,10 +1030,9 @@ async_read_file(aio, buf, numToRead) * ---------------------------------------------------------------------- */ static int -async_write_file(aio, buf, numToWrite) - AsyncIo* aio; /* Pointer to async control block. */ - LPVOID buf; /* Pointer to buffer with data to write. */ - DWORD numToWrite; /* Number of bytes to write. */ +async_write_file(AsyncIo* aio, /* Pointer to async control block. */ + LPVOID buf, /* Pointer to buffer with data to write. */ + DWORD numToWrite) /* Number of bytes to write. */ { aio->pendingError = NO_ERROR; if (aio->thread != (HANDLE) -1) { @@ -1070,12 +1076,12 @@ async_write_file(aio, buf, numToWrite) * ---------------------------------------------------------------------- */ static int -get_overlapped_result(aio, pBytesRead, wait) - AsyncIo* aio; /* Pointer to async control block. */ - LPDWORD pBytesRead; /* Where to place the number of bytes - * transferred. - */ - BOOL wait; /* If true, wait until result is ready. */ +get_overlapped_result(AsyncIo* aio, /* Pointer to async control block. */ + LPDWORD pBytesRead, /* Where to place the number of bytes + * transferred. + */ + BOOL wait /* If true, wait until result is ready. */ + ) { DWORD error = NO_ERROR; /* Error status from last function. */ @@ -1145,7 +1151,7 @@ fd_init(void) return 0; } static int -spawn_init() +spawn_init(void) { int i; #if defined(ERTS_SMP) && defined(USE_CANCELIOEX) @@ -1532,7 +1538,7 @@ create_child_process siStartInfo.hStdOutput = hStdout; siStartInfo.hStdError = hStderr; - applType = application_type_w(origcmd, (char *) execPath, FALSE, FALSE, + applType = application_type_w((WCHAR *) origcmd, execPath, FALSE, FALSE, errno_return); if (applType == APPL_NONE) { return FALSE; @@ -1555,7 +1561,7 @@ create_child_process if (run_cmd) { WCHAR cmdPath[MAX_PATH]; int cmdType; - cmdType = application_type_w((char *) L"cmd.exe", (char *) cmdPath, TRUE, FALSE, errno_return); + cmdType = application_type_w(L"cmd.exe", cmdPath, TRUE, FALSE, errno_return); if (cmdType == APPL_NONE || cmdType == APPL_DOS) { return FALSE; } @@ -1921,7 +1927,7 @@ static int application_type return applType; } -static int application_type_w (const char *originalName, /* Name of the application to find. */ +static int application_type_w (const WCHAR *originalName, /* Name of the application to find. */ WCHAR wfullpath[MAX_PATH],/* Filled with complete path to * application. */ BOOL search_in_path, /* If we should search the system wide path */ @@ -1937,25 +1943,24 @@ static int application_type_w (const char *originalName, /* Name of the applicat static WCHAR extensions[][5] = {L"", L".com", L".exe", L".bat"}; int is_quoted; int len; - WCHAR *wname = (WCHAR *) originalName; WCHAR xfullpath[MAX_PATH]; - len = wcslen(wname); - is_quoted = handle_quotes && len > 0 && wname[0] == L'"' && - wname[len-1] == L'"'; + len = wcslen(originalName); + is_quoted = handle_quotes && len > 0 && originalName[0] == L'"' && + originalName[len-1] == L'"'; applType = APPL_NONE; *error_return = ENOENT; for (i = 0; i < (int) (sizeof(extensions) / sizeof(extensions[0])); i++) { if(is_quoted) { - lstrcpynW(xfullpath, wname+1, MAX_PATH - 7); /* Cannot start using StringCchCopy yet, we support + lstrcpynW(xfullpath, originalName+1, MAX_PATH - 7); /* Cannot start using StringCchCopy yet, we support older platforms */ len = wcslen(xfullpath); if(len > 0) { xfullpath[len-1] = L'\0'; } } else { - lstrcpynW(xfullpath, wname, MAX_PATH - 5); + lstrcpynW(xfullpath, originalName, MAX_PATH - 5); } wcscat(xfullpath, extensions[i]); /* It seems that the Unicode version does not allow in and out parameter to overlap. */ @@ -2080,9 +2085,10 @@ threaded_reader(LPVOID param) buf = OV_BUFFER_PTR(aio); numToRead = OV_NUM_TO_READ(aio); aio->pendingError = 0; - if (!ReadFile(aio->fd, buf, numToRead, &aio->bytesTransferred, NULL)) - aio->pendingError = GetLastError(); - else if (aio->flags & DF_XLAT_CR) { + if (!ReadFile(aio->fd, buf, numToRead, &aio->bytesTransferred, NULL)) { + int error = GetLastError(); + aio->pendingError = error; + } else if (aio->flags & DF_XLAT_CR) { char *s; int n; @@ -2209,56 +2215,79 @@ translate_fd(int fd) return handle; } +/* Driver level locking, start function is serialized */ +static DriverData *save_01_port = NULL; +static DriverData *save_22_port = NULL; + static ErlDrvData fd_start(ErlDrvPort port_num, char* name, SysDriverOpts* opts) { DriverData* dp; int is_std_error = (opts->ofd == 2); - - opts->ifd = (int) translate_fd(opts->ifd); - opts->ofd = (int) translate_fd(opts->ofd); - if ((dp = new_driver_data(port_num, opts->packet_bytes, 2, TRUE)) == NULL) - 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; - } - - fd_driver_input = &(dp->in); - dp->in.flags = DF_XLAT_CR; - if (is_std_error) { - dp->out.flags |= DF_DROP_IF_INVH; /* Just drop messages if stderror - is an invalid handle */ + int in = opts->ifd, out = opts->ofd; + + opts->ifd = (Uint) translate_fd(in); + opts->ofd = (Uint) translate_fd(out); + if ( in == 0 && out == 1 && save_01_port != NULL) { + dp = save_01_port; + return reuse_driver_data(dp, (HANDLE) opts->ifd, (HANDLE) opts->ofd, opts->read_write, port_num); + } else if (in == 2 && out == 2 && save_22_port != NULL) { + dp = save_22_port; + return reuse_driver_data(dp, (HANDLE) opts->ifd, (HANDLE) opts->ofd, opts->read_write, port_num); + } else { + if ((dp = new_driver_data(port_num, opts->packet_bytes, 2, TRUE)) == NULL) + 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; + } + + fd_driver_input = &(dp->in); + dp->in.flags = DF_XLAT_CR; + if (is_std_error) { + dp->out.flags |= DF_DROP_IF_INVH; /* Just drop messages if stderror + is an invalid handle */ + } + + if ( in == 0 && out == 1) { + save_01_port = dp; + } else if (in == 2 && out == 2) { + save_22_port = dp; + } + return set_driver_data(dp, (HANDLE) opts->ifd, (HANDLE) opts->ofd, opts->read_write, 0); } - return set_driver_data(dp, opts->ifd, opts->ofd, opts->read_write, 0); } static void fd_stop(ErlDrvData d) { int fd = (int)d; + DriverData* dp = driver_data+fd; /* - * I don't know a clean way to terminate the threads - * (TerminateThread() doesn't release the stack), - * so will we'll let the threads live. Normally, the fd - * driver is only used to support the -oldshell option, - * so this shouldn't be a problem in practice. - * - * Since we will not attempt to terminate the threads, - * better not close the input or output files either. + * 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, + * as the only FD-drivers are for 0,1 and 2 adn the only time they + * get closed is by init:reboot). + * So - just deselect them and let everything be as is. + * They get woken up in fd_start again, where the DriverData is + * remembered. /PaN */ + if (dp->in.ov.hEvent != NULL) { + (void) driver_select(dp->port_num, + (ErlDrvEvent)dp->in.ov.hEvent, + ERL_DRV_READ, 0); + } + if (dp->out.ov.hEvent != NULL) { + (void) driver_select(dp->port_num, + (ErlDrvEvent)dp->out.ov.hEvent, + ERL_DRV_WRITE, 0); + } - driver_data[fd].in.thread = (HANDLE) -1; - driver_data[fd].out.thread = (HANDLE) -1; - driver_data[fd].in.fd = INVALID_HANDLE_VALUE; - driver_data[fd].out.fd = INVALID_HANDLE_VALUE; - - /*return */ common_stop(fd); } static ErlDrvData @@ -2350,7 +2379,6 @@ threaded_exiter(LPVOID param) * because it is an auto reset event. Therefore, always set the * exit flag and signal the event. */ - i = 0; if (dp->out.thread != (HANDLE) -1) { dp->out.flags = DF_EXIT_THREAD; @@ -2718,6 +2746,7 @@ ready_input(ErlDrvData drv_data, ErlDrvEvent ready_event) driver_failure_eof(dp->port_num); } else { /* Report real errors. */ int error = GetLastError(); + (void) driver_select(dp->port_num, ready_event, ERL_DRV_READ, 0); _dosmaperr(error); driver_failure_posix(dp->port_num, errno); |