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|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* All rights reserved. *
* *
* This file is part of HDF5. The full HDF5 copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://www.hdfgroup.org/licenses. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Created: H5ESint.c
*
* Purpose: Internal "event set" routines for managing asynchronous
* operations.
*
* Please see the asynchronous I/O RFC document
* for a full description of how they work, etc.
*
*-------------------------------------------------------------------------
*/
/****************/
/* Module Setup */
/****************/
#include "H5ESmodule.h" /* This source code file is part of the H5ES module */
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5ESpkg.h" /* Event Sets */
#include "H5FLprivate.h" /* Free Lists */
#include "H5Iprivate.h" /* IDs */
#include "H5MMprivate.h" /* Memory management */
#include "H5RSprivate.h" /* Reference-counted strings */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/* Callback context for get events operations */
typedef struct H5ES_get_requests_ctx_t {
hid_t *connector_ids; /* Output buffer for list of connector IDs that match the above requests */
void **requests; /* Output buffer for list of requests in event set */
size_t array_len; /* Length of the above output buffers */
size_t i; /* Number of elements filled in output buffers */
} H5ES_get_requests_ctx_t;
/* Callback context for wait operations */
typedef struct H5ES_wait_ctx_t {
H5ES_t *es; /* Event set being operated on */
uint64_t timeout; /* Timeout for wait operation (in ns) */
size_t *num_in_progress; /* Count of # of operations that have not completed */
bool *op_failed; /* Flag to indicate an operation failed */
} H5ES_wait_ctx_t;
/* Callback context for cancel operations */
typedef struct H5ES_cancel_ctx_t {
H5ES_t *es; /* Event set being operated on */
size_t *num_not_canceled; /* Count of # of operations were not canceled */
bool *op_failed; /* Flag to indicate an operation failed */
} H5ES_cancel_ctx_t;
/* Callback context for get error info (gei) operations */
typedef struct H5ES_gei_ctx_t {
H5ES_t *es; /* Event set being operated on */
size_t num_err_info; /* # of elements in err_info[] array */
size_t curr_err; /* Index of current error in array */
H5ES_err_info_t *curr_err_info; /* Pointer to current element in err_info[] array */
} H5ES_gei_ctx_t;
/********************/
/* Package Typedefs */
/********************/
/********************/
/* Local Prototypes */
/********************/
static herr_t H5ES__close(H5ES_t *es);
static herr_t H5ES__close_cb(void *es, void **request_token);
static herr_t H5ES__insert(H5ES_t *es, H5VL_t *connector, void *request_token, const char *app_file,
const char *app_func, unsigned app_line, const char *caller, const char *api_args);
static int H5ES__get_requests_cb(H5ES_event_t *ev, void *_ctx);
static herr_t H5ES__handle_fail(H5ES_t *es, H5ES_event_t *ev);
static herr_t H5ES__op_complete(H5ES_t *es, H5ES_event_t *ev, H5VL_request_status_t ev_status);
static int H5ES__wait_cb(H5ES_event_t *ev, void *_ctx);
static int H5ES__cancel_cb(H5ES_event_t *ev, void *_ctx);
static int H5ES__get_err_info_cb(H5ES_event_t *ev, void *_ctx);
static int H5ES__close_failed_cb(H5ES_event_t *ev, void *_ctx);
/*********************/
/* Package Variables */
/*********************/
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/* Event Set ID class */
static const H5I_class_t H5I_EVENTSET_CLS[1] = {{
H5I_EVENTSET, /* ID class value */
0, /* Class flags */
0, /* # of reserved IDs for class */
(H5I_free_t)H5ES__close_cb /* Callback routine for closing objects of this class */
}};
/* Declare a static free list to manage H5ES_t structs */
H5FL_DEFINE_STATIC(H5ES_t);
/*-------------------------------------------------------------------------
* Function: H5ES_init
*
* Purpose: Initialize the interface from some other layer.
*
* Return: Success: non-negative
* Failure: negative
*-------------------------------------------------------------------------
*/
herr_t
H5ES_init(void)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(FAIL)
/* Initialize the ID group for the event set IDs */
if (H5I_register_type(H5I_EVENTSET_CLS) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTINIT, FAIL, "unable to initialize interface");
done:
FUNC_LEAVE_NOAPI(ret_value)
}
/*-------------------------------------------------------------------------
* Function: H5ES_term_package
*
* Purpose: Terminate this interface.
*
* Return: Success: Positive if anything is done that might
* affect other interfaces; zero otherwise.
* Failure: Negative
*
*-------------------------------------------------------------------------
*/
int
H5ES_term_package(void)
{
int n = 0;
FUNC_ENTER_NOAPI_NOINIT_NOERR
/* Destroy the event set ID group */
n += (H5I_dec_type_ref(H5I_EVENTSET) > 0);
FUNC_LEAVE_NOAPI(n)
} /* end H5ES_term_package() */
/*-------------------------------------------------------------------------
* Function: H5ES__close_cb
*
* Purpose: Called when the ref count reaches zero on an event set's ID
*
* Return: SUCCEED / FAIL
*
*-------------------------------------------------------------------------
*/
static herr_t
H5ES__close_cb(void *_es, void H5_ATTR_UNUSED **rt)
{
H5ES_t *es = (H5ES_t *)_es; /* The event set to close */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* Sanity check */
assert(es);
/* Close the event set object */
if (H5ES__close(es) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_CLOSEERROR, FAIL, "unable to close event set");
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5ES__close_cb() */
/*-------------------------------------------------------------------------
* Function: H5ES__create
*
* Purpose: Private function to create an event set object
*
* Return: Success: Pointer to an event set struct
* Failure: NULL
*
*-------------------------------------------------------------------------
*/
H5ES_t *
H5ES__create(void)
{
H5ES_t *es = NULL; /* Pointer to event set */
H5ES_t *ret_value = NULL; /* Return value */
FUNC_ENTER_PACKAGE
/* Allocate space for new event set */
if (NULL == (es = H5FL_CALLOC(H5ES_t)))
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTALLOC, NULL, "can't allocate event set object");
/* Set the return value */
ret_value = es;
done:
if (!ret_value)
if (es && H5ES__close(es) < 0)
HDONE_ERROR(H5E_EVENTSET, H5E_CANTRELEASE, NULL, "unable to free event set");
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5ES__create() */
/*-------------------------------------------------------------------------
* Function: H5ES__insert
*
* Purpose: Insert a request token into an event set
*
* Return: SUCCEED / FAIL
*
*-------------------------------------------------------------------------
*/
static herr_t
H5ES__insert(H5ES_t *es, H5VL_t *connector, void *request_token, const char *app_file, const char *app_func,
unsigned app_line, const char *caller, const char *api_args)
{
H5ES_event_t *ev = NULL; /* Event for request */
bool ev_inserted = false; /* Flag to indicate that event is in active list */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* Sanity check */
assert(es);
/* Create new event */
if (NULL == (ev = H5ES__event_new(connector, request_token)))
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTCREATE, FAIL, "can't create event object");
/* Copy the app source information */
/* The 'app_func' & 'app_file' strings are statically allocated (by the compiler)
* there's no need to duplicate them.
*/
ev->op_info.app_file_name = app_file;
ev->op_info.app_func_name = app_func;
ev->op_info.app_line_num = app_line;
/* Set the event's operation counter */
ev->op_info.op_ins_count = es->op_counter++;
/* Set the event's timestamp & execution time */
ev->op_info.op_ins_ts = H5_now_usec();
ev->op_info.op_exec_ts = UINT64_MAX;
ev->op_info.op_exec_time = UINT64_MAX;
/* Copy the API routine's name & arguments */
/* The 'caller' string is also statically allocated (by the compiler)
* there's no need to duplicate it.
*/
ev->op_info.api_name = caller;
assert(ev->op_info.api_args == NULL);
if (api_args && NULL == (ev->op_info.api_args = H5MM_xstrdup(api_args)))
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTALLOC, FAIL, "can't copy API routine arguments");
/* Append fully initialized event onto the event set's 'active' list */
H5ES__list_append(&es->active, ev);
ev_inserted = true;
/* Invoke the event set's 'insert' callback, if present */
if (es->ins_func)
if ((es->ins_func)(&ev->op_info, es->ins_ctx) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_CALLBACK, FAIL, "'insert' callback for event set failed");
done:
/* Release resources on error */
if (ret_value < 0)
if (ev) {
if (ev_inserted)
H5ES__list_remove(&es->active, ev);
if (H5ES__event_free(ev) < 0)
HDONE_ERROR(H5E_EVENTSET, H5E_CANTRELEASE, FAIL, "unable to release event");
}
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5ES__insert() */
/*-------------------------------------------------------------------------
* Function: H5ES_insert
*
* Purpose: Insert a request token into an event set
*
* Return: SUCCEED / FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5ES_insert(hid_t es_id, H5VL_t *connector, void *token, const char *caller, const char *caller_args, ...)
{
H5ES_t *es = NULL; /* Event set for the operation */
const char *app_file; /* Application source file name */
const char *app_func; /* Application source function name */
unsigned app_line; /* Application source line number */
H5RS_str_t *rs = NULL; /* Ref-counted string to compose formatted argument string in */
const char *api_args; /* Pointer to api_args string from ref-counted string */
va_list ap; /* Varargs for caller */
bool arg_started = false; /* Whether the va_list has been started */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(FAIL)
/* Sanity check */
assert(connector);
assert(token);
assert(caller);
assert(caller_args);
/* Get event set */
if (NULL == (es = (H5ES_t *)H5I_object_verify(es_id, H5I_EVENTSET)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an event set");
/* Check for errors in event set */
if (es->err_occurred)
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTINSERT, FAIL, "event set has failed operations");
/* Start working on the API routines arguments */
va_start(ap, caller_args);
arg_started = true;
/* Copy the app source information */
(void)va_arg(ap, char *); /* Toss the 'app_file' parameter name */
app_file = va_arg(ap, char *);
(void)va_arg(ap, char *); /* Toss the 'app_func' parameter name */
app_func = va_arg(ap, char *);
(void)va_arg(ap, char *); /* Toss the 'app_line' parameter name */
app_line = va_arg(ap, unsigned);
/* Create the string for the API routine's arguments */
if (NULL == (rs = H5RS_create(NULL)))
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTALLOC, FAIL, "can't allocate ref-counted string");
/* Copy the string for the API routine's arguments */
/* (skip the six characters from the app's file, function and line # arguments) */
assert(0 == HDstrncmp(caller_args, "*s*sIu", 6));
if (H5_trace_args(rs, caller_args + 6, ap) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTSET, FAIL, "can't create formatted API arguments");
if (NULL == (api_args = H5RS_get_str(rs)))
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTGET, FAIL, "can't get pointer to formatted API arguments");
/* Insert the operation into the event set */
if (H5ES__insert(es, connector, token, app_file, app_func, app_line, caller, api_args) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTINSERT, FAIL, "event set has failed operations");
done:
/* Clean up */
if (arg_started)
va_end(ap);
if (rs)
H5RS_decr(rs);
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5ES_insert() */
/*-------------------------------------------------------------------------
* Function: H5ES__insert_request
*
* Purpose: Directly insert a request token into an event set
*
* Return: SUCCEED / FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5ES__insert_request(H5ES_t *es, H5VL_t *connector, void *token)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* Sanity check */
assert(es);
assert(connector);
assert(token);
/* Insert an 'anonymous' operation into the event set */
if (H5ES__insert(es, connector, token, NULL, NULL, 0, NULL, NULL) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTINSERT, FAIL, "event set has failed operations");
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5ES__insert_request() */
/*-------------------------------------------------------------------------
* Function: H5ES__get_requests_cb
*
* Purpose: Iterator callback for H5ES__get_events - adds the event to
* the list.
*
* Return: SUCCEED / FAIL
*
*-------------------------------------------------------------------------
*/
static int
H5ES__get_requests_cb(H5ES_event_t *ev, void *_ctx)
{
H5ES_get_requests_ctx_t *ctx = (H5ES_get_requests_ctx_t *)_ctx; /* Callback context */
int ret_value = H5_ITER_CONT; /* Return value */
FUNC_ENTER_PACKAGE_NOERR
/* Sanity check */
assert(ev);
assert(ctx);
assert(ctx->i < ctx->array_len);
/* Get the connector ID for the event */
if (ctx->connector_ids)
ctx->connector_ids[ctx->i] = ev->request->connector->id;
/* Get the request for the event */
if (ctx->requests)
ctx->requests[ctx->i] = ev->request->data;
/* Check if we've run out of room in the arrays */
if (++ctx->i == ctx->array_len)
ret_value = H5_ITER_STOP;
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5ES__get_requests_cb() */
/*-------------------------------------------------------------------------
* Function: H5ES__get_requests
*
* Purpose: Get all requests in an event set.
*
* Return: SUCCEED / FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5ES__get_requests(H5ES_t *es, H5_iter_order_t order, hid_t *connector_ids, void **requests, size_t array_len)
{
H5ES_get_requests_ctx_t ctx; /* Callback context */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* Sanity check */
assert(es);
assert(array_len > 0);
assert(requests || connector_ids);
/* Set up context for iterator callbacks */
ctx.connector_ids = connector_ids;
ctx.requests = requests;
ctx.array_len = array_len;
ctx.i = 0;
/* Iterate over the events in the set */
if (H5ES__list_iterate(&es->active, order, H5ES__get_requests_cb, &ctx) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_BADITER, FAIL, "iteration failed");
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5ES__get_requests() */
/*-------------------------------------------------------------------------
* Function: H5ES__handle_fail
*
* Purpose: Handle a failed event
*
* Return: SUCCEED / FAIL
*
*-------------------------------------------------------------------------
*/
static herr_t
H5ES__handle_fail(H5ES_t *es, H5ES_event_t *ev)
{
FUNC_ENTER_PACKAGE_NOERR
/* Sanity check */
assert(es);
assert(es->active.head);
assert(ev);
/* Set error flag for event set */
es->err_occurred = true;
/* Remove event from normal list */
H5ES__list_remove(&es->active, ev);
/* Append event onto the event set's error list */
H5ES__list_append(&es->failed, ev);
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5ES__handle_fail() */
/*-------------------------------------------------------------------------
* Function: H5ES__op_complete
*
* Purpose: Handle an operation completing
*
* Return: SUCCEED / FAIL
*
*-------------------------------------------------------------------------
*/
static herr_t
H5ES__op_complete(H5ES_t *es, H5ES_event_t *ev, H5VL_request_status_t ev_status)
{
H5VL_request_specific_args_t vol_cb_args; /* Arguments to VOL callback */
hid_t err_stack_id = H5I_INVALID_HID; /* Error stack for failed operation */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* Sanity check */
assert(es);
assert(ev);
assert(H5VL_REQUEST_STATUS_SUCCEED == ev_status || H5VL_REQUEST_STATUS_FAIL == ev_status ||
H5VL_REQUEST_STATUS_CANCELED == ev_status);
/* Handle each form of event completion */
if (H5VL_REQUEST_STATUS_SUCCEED == ev_status || H5VL_REQUEST_STATUS_CANCELED == ev_status) {
/* Invoke the event set's 'complete' callback, if present */
if (es->comp_func) {
H5ES_status_t op_status; /* Status for complete callback */
/* Set appropriate info for callback */
if (H5VL_REQUEST_STATUS_SUCCEED == ev_status) {
/* Translate status */
op_status = H5ES_STATUS_SUCCEED;
/* Set up VOL callback arguments */
vol_cb_args.op_type = H5VL_REQUEST_GET_EXEC_TIME;
vol_cb_args.args.get_exec_time.exec_ts = &ev->op_info.op_exec_ts;
vol_cb_args.args.get_exec_time.exec_time = &ev->op_info.op_exec_time;
/* Retrieve the execution time info */
if (H5VL_request_specific(ev->request, &vol_cb_args) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTGET, FAIL,
"unable to retrieve execution time info for operation");
}
else
/* Translate status */
op_status = H5ES_STATUS_CANCELED;
if ((es->comp_func)(&ev->op_info, op_status, H5I_INVALID_HID, es->comp_ctx) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_CALLBACK, FAIL, "'complete' callback for event set failed");
} /* end if */
/* Event success or cancellation */
if (H5ES__event_completed(ev, &es->active) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTRELEASE, FAIL, "unable to release completed event");
} /* end if */
else if (H5VL_REQUEST_STATUS_FAIL == ev_status) {
/* Invoke the event set's 'complete' callback, if present */
if (es->comp_func) {
/* Set up VOL callback arguments */
vol_cb_args.op_type = H5VL_REQUEST_GET_ERR_STACK;
vol_cb_args.args.get_err_stack.err_stack_id = H5I_INVALID_HID;
/* Retrieve the error stack for the operation */
if (H5VL_request_specific(ev->request, &vol_cb_args) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTGET, FAIL, "unable to retrieve error stack for operation");
/* Set values */
err_stack_id = vol_cb_args.args.get_err_stack.err_stack_id;
if ((es->comp_func)(&ev->op_info, H5ES_STATUS_FAIL, err_stack_id, es->comp_ctx) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_CALLBACK, FAIL, "'complete' callback for event set failed");
} /* end if */
/* Handle failure */
if (H5ES__handle_fail(es, ev) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTSET, FAIL, "unable to handle failed event");
} /* end else-if */
else
HGOTO_ERROR(H5E_EVENTSET, H5E_BADVALUE, FAIL, "unknown event status?!?");
done:
/* Clean up */
if (H5I_INVALID_HID != err_stack_id)
if (H5I_dec_ref(err_stack_id) < 0)
HDONE_ERROR(H5E_EVENTSET, H5E_CANTDEC, FAIL,
"unable to decrement ref count on error stack for failed operation")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5ES__op_complete() */
/*-------------------------------------------------------------------------
* Function: H5ES__wait_cb
*
* Purpose: Common routine for testing / waiting on an operation
*
* Return: SUCCEED / FAIL
*
*-------------------------------------------------------------------------
*/
static int
H5ES__wait_cb(H5ES_event_t *ev, void *_ctx)
{
H5ES_wait_ctx_t *ctx = (H5ES_wait_ctx_t *)_ctx; /* Callback context */
H5VL_request_status_t ev_status = H5VL_REQUEST_STATUS_SUCCEED; /* Status from event's operation */
uint64_t start_time = 0, elapsed_time = 0; /* Start and elapsed times for waiting on an operation */
int ret_value = H5_ITER_CONT; /* Return value */
FUNC_ENTER_PACKAGE
/* Sanity check */
assert(ev);
assert(ctx);
/* Wait on the request */
if (ctx->timeout != H5ES_WAIT_NONE && ctx->timeout != H5ES_WAIT_FOREVER)
start_time = H5_now_usec();
if (H5VL_request_wait(ev->request, ctx->timeout, &ev_status) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTWAIT, H5_ITER_ERROR, "unable to test operation");
if (ctx->timeout != H5ES_WAIT_NONE && ctx->timeout != H5ES_WAIT_FOREVER)
elapsed_time = H5_now_usec() - start_time;
/* Check for status values that indicate we should break out of the loop */
if (ev_status == H5VL_REQUEST_STATUS_FAIL) {
/* Handle event completion */
if (H5ES__op_complete(ctx->es, ev, ev_status) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTRELEASE, H5_ITER_ERROR, "unable to release completed event");
/* Record the error */
*ctx->op_failed = true;
/* Exit from the iteration */
ret_value = H5_ITER_STOP;
} /* end if */
else if (ev_status == H5VL_REQUEST_STATUS_SUCCEED || ev_status == H5VL_REQUEST_STATUS_CANCELED) {
/* Handle event completion */
if (H5ES__op_complete(ctx->es, ev, ev_status) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTRELEASE, H5_ITER_ERROR, "unable to release completed event");
} /* end else-if */
else if (ev_status == H5VL_REQUEST_STATUS_CANT_CANCEL)
/* Should never get a status of 'can't cancel' back from test / wait operation */
HGOTO_ERROR(H5E_EVENTSET, H5E_BADVALUE, H5_ITER_ERROR,
"received \"can't cancel\" status for operation");
else {
/* Sanity check */
assert(ev_status == H5VL_REQUEST_STATUS_IN_PROGRESS);
/* Increment "in progress operation" counter */
(*ctx->num_in_progress)++;
} /* end if */
/* Check for updateable timeout */
if (ctx->timeout != H5ES_WAIT_NONE && ctx->timeout != H5ES_WAIT_FOREVER) {
/* Update timeout for next operation */
if ((elapsed_time * 1000) > ctx->timeout)
ctx->timeout = H5ES_WAIT_NONE;
else
ctx->timeout -= (elapsed_time * 1000); /* Convert us to ns */
} /* end if */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5ES__wait_cb() */
/*-------------------------------------------------------------------------
* Function: H5ES__wait
*
* Purpose: Wait for operations in event set to complete
*
* Note: Timeout value is in ns, and is for H5ES__wait itself.
*
* Return: SUCCEED / FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5ES__wait(H5ES_t *es, uint64_t timeout, size_t *num_in_progress, bool *op_failed)
{
H5ES_wait_ctx_t ctx; /* Iterator callback context info */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* Sanity check */
assert(es);
assert(num_in_progress);
assert(op_failed);
/* Set user's parameters to known values */
*num_in_progress = 0;
*op_failed = false;
/* Set up context for iterator callbacks */
ctx.es = es;
ctx.timeout = timeout;
ctx.num_in_progress = num_in_progress;
ctx.op_failed = op_failed;
/* Iterate over the events in the set, waiting for them to complete */
if (H5ES__list_iterate(&es->active, H5_ITER_NATIVE, H5ES__wait_cb, &ctx) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_BADITER, FAIL, "iteration failed");
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5ES__wait() */
/*-------------------------------------------------------------------------
* Function: H5ES__cancel_cb
*
* Purpose: Callback for canceling operations
*
* Return: SUCCEED / FAIL
*
*-------------------------------------------------------------------------
*/
static int
H5ES__cancel_cb(H5ES_event_t *ev, void *_ctx)
{
H5ES_cancel_ctx_t *ctx = (H5ES_cancel_ctx_t *)_ctx; /* Callback context */
H5VL_request_status_t ev_status = H5VL_REQUEST_STATUS_SUCCEED; /* Status from event's operation */
int ret_value = H5_ITER_CONT; /* Return value */
FUNC_ENTER_PACKAGE
/* Sanity check */
assert(ev);
assert(ctx);
/* Attempt to cancel the request */
if (H5VL_request_cancel(ev->request, &ev_status) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTCANCEL, H5_ITER_ERROR, "unable to cancel operation");
/* Check for status values that indicate we should break out of the loop */
if (ev_status == H5VL_REQUEST_STATUS_FAIL) {
/* Handle event completion */
if (H5ES__op_complete(ctx->es, ev, ev_status) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTSET, H5_ITER_ERROR, "unable to handle failed event");
/* Record the error */
*ctx->op_failed = true;
/* Exit from the iteration */
ret_value = H5_ITER_STOP;
} /* end if */
else if (ev_status == H5VL_REQUEST_STATUS_SUCCEED) {
/* Increment "not canceled" counter */
(*ctx->num_not_canceled)++;
/* Handle event completion */
if (H5ES__op_complete(ctx->es, ev, ev_status) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTRELEASE, H5_ITER_ERROR, "unable to release completed event");
} /* end else-if */
else if (ev_status == H5VL_REQUEST_STATUS_CANT_CANCEL || ev_status == H5VL_REQUEST_STATUS_IN_PROGRESS) {
/* Increment "not canceled" counter */
(*ctx->num_not_canceled)++;
} /* end else-if */
else {
/* Sanity check */
assert(ev_status == H5VL_REQUEST_STATUS_CANCELED);
/* Handle event completion */
if (H5ES__op_complete(ctx->es, ev, ev_status) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTRELEASE, H5_ITER_ERROR, "unable to release completed event");
} /* end else */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5ES__cancel_cb() */
/*-------------------------------------------------------------------------
* Function: H5ES__cancel
*
* Purpose: Cancel operations in event set
*
* Return: SUCCEED / FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5ES__cancel(H5ES_t *es, size_t *num_not_canceled, bool *op_failed)
{
H5ES_cancel_ctx_t ctx; /* Iterator callback context info */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* Sanity check */
assert(es);
assert(num_not_canceled);
assert(op_failed);
/* Set user's parameters to known values */
*num_not_canceled = 0;
*op_failed = false;
/* Set up context for iterator callbacks */
ctx.es = es;
ctx.num_not_canceled = num_not_canceled;
ctx.op_failed = op_failed;
/* Iterate over the events in the set, attempting to cancel them */
if (H5ES__list_iterate(&es->active, H5_ITER_NATIVE, H5ES__cancel_cb, &ctx) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_BADITER, FAIL, "iteration failed");
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5ES__cancel() */
/*-------------------------------------------------------------------------
* Function: H5ES__get_err_info_cb
*
* Purpose: Retrieve information about a failed operation
*
* Return: SUCCEED / FAIL
*
*-------------------------------------------------------------------------
*/
static int
H5ES__get_err_info_cb(H5ES_event_t *ev, void *_ctx)
{
H5VL_request_specific_args_t vol_cb_args; /* Arguments to VOL callback */
H5ES_gei_ctx_t *ctx = (H5ES_gei_ctx_t *)_ctx; /* Callback context */
int ret_value = H5_ITER_CONT; /* Return value */
FUNC_ENTER_PACKAGE
/* Sanity check */
assert(ev);
assert(ctx);
/* Copy operation info for event */
/* The 'app_func_name', 'app_file_name', and 'api_name' strings are statically allocated (by the compiler)
* so there's no need to duplicate them internally, but they are duplicated
* here, when they are given back to the user.
*/
if (NULL == (ctx->curr_err_info->api_name = H5MM_xstrdup(ev->op_info.api_name)))
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTALLOC, H5_ITER_ERROR, "can't copy HDF5 API routine name");
if (NULL == (ctx->curr_err_info->api_args = H5MM_xstrdup(ev->op_info.api_args)))
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTALLOC, H5_ITER_ERROR, "can't copy HDF5 API routine arguments");
if (NULL == (ctx->curr_err_info->app_file_name = H5MM_xstrdup(ev->op_info.app_file_name)))
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTALLOC, H5_ITER_ERROR, "can't copy HDF5 application file name");
if (NULL == (ctx->curr_err_info->app_func_name = H5MM_xstrdup(ev->op_info.app_func_name)))
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTALLOC, H5_ITER_ERROR, "can't copy HDF5 application function name");
ctx->curr_err_info->app_line_num = ev->op_info.app_line_num;
ctx->curr_err_info->op_ins_count = ev->op_info.op_ins_count;
ctx->curr_err_info->op_ins_ts = ev->op_info.op_ins_ts;
ctx->curr_err_info->op_exec_ts = ev->op_info.op_exec_ts;
ctx->curr_err_info->op_exec_time = ev->op_info.op_exec_time;
/* Set up VOL callback arguments */
vol_cb_args.op_type = H5VL_REQUEST_GET_ERR_STACK;
vol_cb_args.args.get_err_stack.err_stack_id = H5I_INVALID_HID;
/* Get error stack for event */
if (H5VL_request_specific(ev->request, &vol_cb_args) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTGET, H5_ITER_ERROR, "unable to retrieve error stack for operation");
/* Set value */
ctx->curr_err_info->err_stack_id = vol_cb_args.args.get_err_stack.err_stack_id;
/* Remove event from event set's failed list */
H5ES__list_remove(&ctx->es->failed, ev);
/* Free event node */
if (H5ES__event_free(ev) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTRELEASE, H5_ITER_ERROR, "unable to release failed event");
/* Advance to next element of err_info[] array */
ctx->curr_err++;
ctx->curr_err_info++;
/* Stop iteration if err_info[] array is full */
if (ctx->curr_err == ctx->num_err_info)
ret_value = H5_ITER_STOP;
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5ES__get_err_info_cb() */
/*-------------------------------------------------------------------------
* Function: H5ES__get_err_info
*
* Purpose: Retrieve information about failed operations
*
* Return: SUCCEED / FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5ES__get_err_info(H5ES_t *es, size_t num_err_info, H5ES_err_info_t err_info[], size_t *num_cleared)
{
H5ES_gei_ctx_t ctx; /* Iterator callback context info */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* Sanity check */
assert(es);
assert(num_err_info);
assert(err_info);
assert(num_cleared);
/* Set up context for iterator callbacks */
ctx.es = es;
ctx.num_err_info = num_err_info;
ctx.curr_err = 0;
ctx.curr_err_info = &err_info[0];
/* Iterate over the failed events in the set, copying their error info */
if (H5ES__list_iterate(&es->failed, H5_ITER_NATIVE, H5ES__get_err_info_cb, &ctx) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_BADITER, FAIL, "iteration failed");
/* Set # of failed events cleared from event set's failed list */
*num_cleared = ctx.curr_err;
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5ES__get_err_info() */
/*-------------------------------------------------------------------------
* Function: H5ES__close_failed_cb
*
* Purpose: Release a failed event
*
* Return: SUCCEED / FAIL
*
*-------------------------------------------------------------------------
*/
static int
H5ES__close_failed_cb(H5ES_event_t *ev, void *_ctx)
{
H5ES_t *es = (H5ES_t *)_ctx; /* Callback context */
int ret_value = H5_ITER_CONT; /* Return value */
FUNC_ENTER_PACKAGE
/* Sanity check */
assert(ev);
assert(es);
/* Remove event from event set's failed list */
H5ES__list_remove(&es->failed, ev);
/* Free event node */
if (H5ES__event_free(ev) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_CANTRELEASE, H5_ITER_ERROR, "unable to release failed event");
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5ES__close_failed_cb() */
/*-------------------------------------------------------------------------
* Function: H5ES__close
*
* Purpose: Destroy an event set object
*
* Return: SUCCEED / FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5ES__close(H5ES_t *es)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* Sanity check */
assert(es);
/* Fail if active operations still present */
if (H5ES__list_count(&es->active) > 0)
HGOTO_ERROR(
H5E_EVENTSET, H5E_CANTCLOSEOBJ, FAIL,
"can't close event set while unfinished operations are present (i.e. wait on event set first)");
/* Iterate over the failed events in the set, releasing them */
if (H5ES__list_iterate(&es->failed, H5_ITER_NATIVE, H5ES__close_failed_cb, (void *)es) < 0)
HGOTO_ERROR(H5E_EVENTSET, H5E_BADITER, FAIL, "iteration failed");
/* Release the event set */
es = H5FL_FREE(H5ES_t, es);
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5ES__close() */
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