win32_start_service_ctrl_dispatcher

Registers the script with the SCM, so that it can act as the service with the given name

Description

void win32_start_service_ctrl_dispatcher(string $name, bool $gracefulMode = true)

When launched via the Service Control Manager, a service process is required to "check-in" with it to establish service monitoring and communication facilities. This function performs the check-in by spawning a thread to handle the lower-level communication with the service control manager.

Once started, the service process should do 2 things. The first is to tell the Service Control Manager that the service is running. This is achieved by calling win32_set_service_status with the WIN32_SERVICE_RUNNING constant. If you need to perform some lengthy process before the service is actually running, then you can use the WIN32_SERVICE_START_PENDING constant. The second is to continue to check-in with the service control manager so that it can determine if it should terminate. This is achieved by periodically calling win32_get_last_control_message and handling the return code appropriately.

Caution

Since version 0.2.0, this function work only in "cli" SAPI. On other SAPI this function is disabled.

Parameters

name

The short-name of the service, as registered by win32_create_service.

gracefulMode

true for exit graceful. false for exit with error. See win32_set_service_exit_mode for more details.

Return Values

No value is returned.

Prior to version 1.0.0, returned WIN32_NO_ERROR on success, false if there is a problem with the parameters or a Win32 Error Code on failure.

Errors/Exceptions

Prior to version 1.0.0, if the SAPI is not "cli", this function emits an E_ERROR level error.

As of version 1.0.0, will throw a Win32ServiceException if SAPI is not "cli"

Changelog

Version Description
PECL win32service 1.0.0 Throws a ValueError on invalid data in parameters, previously false was returned.
PECL win32service 1.0.0 Throws a Win32ServiceException on error, previously a Win32 Error Code was returned.
PECL win32service 1.0.0 The return type is now void, previously it was mixed.
PECL win32service 0.4.0 The parameter gracefulMode has been added.
PECL win32service 0.2.0 This function works only in the "cli" SAPI.

Examples

Example #1 A win32_start_service_ctrl_dispatcher example

Check if the service is runnig under the SCM.

<?php
if (!win32_start_service_ctrl_dispatcher('dummyphp')) {
  die("I'm probably not running under the service control manager");
}

win32_set_service_status(WIN32_SERVICE_START_PENDING);

// Some lengthy process to get this service up and running.

win32_set_service_status(WIN32_SERVICE_RUNNING);

while (WIN32_SERVICE_CONTROL_STOP != win32_get_last_control_message()) {
  # do some work here, trying not to take more than around 30 seconds
  # before coming back into the loop again
}
?>

See Also

  • win32_set_service_status
  • win32_get_last_control_message
  • win32_set_service_exit_mode
  • win32_set_service_exit_code
  • Win32 Error Codes