Leaked source code of windows server 2003
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/*++
Copyright (c) 1998 Microsoft Corporation
Module Name:
centctrl.cpp
Abstract:
SIS Groveler central controller
Authors:
John Douceur, 1998
Environment:
User Mode
Revision History:
--*/
#include "all.hxx"
const _TCHAR total_processor_time_path[] = _T("\\Processor(_Total#0)\\% Processor Time");
CentralController::CentralController(
int num_partitions,
Groveler *grovelers,
GrovelStatus *groveler_statuses,
ReadParameters *read_parameters,
WriteParameters *write_parameters,
ReadDiskInformation **read_disk_info,
WriteDiskInformation **write_disk_info,
int *num_excluded_paths,
const _TCHAR ***excluded_paths)
: hash_match_ratio_filter(read_parameters->sis_efficacy_history_size,
write_parameters->hash_match_ratio),
compare_match_ratio_filter(read_parameters->sis_efficacy_history_size,
write_parameters->compare_match_ratio),
dequeue_hash_ratio_filter(read_parameters->log_winnow_history_size,
write_parameters->dequeue_hash_ratio)
{
ASSERT(this != 0);
unsigned int current_time = GET_TICK_COUNT();
this->num_partitions = num_partitions;
ASSERT(num_partitions > 0);
this->grovelers = grovelers;
ASSERT(grovelers != 0);
base_grovel_interval = read_parameters->base_grovel_interval;
ASSERT(base_grovel_interval > 0);
max_grovel_interval = read_parameters->max_grovel_interval;
ASSERT(max_grovel_interval > 0);
ASSERT(max_grovel_interval >= base_grovel_interval);
max_response_lag = read_parameters->max_response_lag;
ASSERT(max_response_lag > 0);
working_grovel_interval = read_parameters->working_grovel_interval;
ASSERT(working_grovel_interval > 0);
ASSERT(base_grovel_interval >= working_grovel_interval);
grovel_duration = read_parameters->grovel_duration;
ASSERT(grovel_duration > 0);
ASSERT(grovel_duration <= base_grovel_interval);
ASSERT(grovel_duration <= max_grovel_interval);
ASSERT(grovel_duration <= working_grovel_interval);
hash_match_ratio = &write_parameters->hash_match_ratio;
ASSERT(hash_match_ratio != 0);
ASSERT(*hash_match_ratio >= 0.0);
ASSERT(*hash_match_ratio <= 1.0);
compare_match_ratio = &write_parameters->compare_match_ratio;
ASSERT(compare_match_ratio != 0);
ASSERT(*compare_match_ratio >= 0.0);
ASSERT(*compare_match_ratio <= 1.0);
dequeue_hash_ratio = &write_parameters->dequeue_hash_ratio;
ASSERT(dequeue_hash_ratio != 0);
ASSERT(*dequeue_hash_ratio >= 0.0);
ASSERT(*dequeue_hash_ratio <= 1.0);
foreground_partition_index = 0;
num_alive_partitions = 0;
bool some_groveler_dead = false;
//
// Create the control structure for each partion
//
part_controllers = new PartitionController*[num_partitions];
for (int index = 0; index < num_partitions; index++)
{
part_controllers[index] = new PartitionController(
&grovelers[index],
groveler_statuses[index],
read_parameters->target_entries_per_extraction,
read_parameters->max_extraction_interval,
base_grovel_interval,
max_grovel_interval,
read_parameters->low_confidence_grovel_interval,
read_parameters->low_disk_space_grovel_interval,
read_parameters->partition_info_update_interval,
read_parameters->base_restart_extraction_interval,
read_parameters->max_restart_extraction_interval,
read_parameters->base_restart_groveling_interval,
read_parameters->max_restart_groveling_interval,
read_parameters->base_regrovel_interval,
read_parameters->max_regrovel_interval,
read_parameters->volscan_regrovel_threshold,
read_parameters->partition_balance_time_constant,
read_parameters->read_time_increase_history_size,
read_parameters->read_time_decrease_history_size,
read_parameters->file_size_history_size,
read_disk_info[index]->error_retry_log_extraction,
read_disk_info[index]->error_retry_groveling,
read_disk_info[index]->base_usn_log_size,
read_disk_info[index]->max_usn_log_size,
read_parameters->sample_group_size,
read_parameters->acceptance_p_value,
read_parameters->rejection_p_value,
read_parameters->base_use_multiplier,
read_parameters->max_use_multiplier,
read_parameters->peak_finder_accuracy,
read_parameters->peak_finder_range,
read_parameters->base_cpu_load_threshold,
read_parameters->max_cpu_load_threshold,
hash_match_ratio,
compare_match_ratio,
dequeue_hash_ratio,
&write_disk_info[index]->partition_hash_read_time_estimate,
&write_disk_info[index]->partition_compare_read_time_estimate,
&write_disk_info[index]->mean_file_size,
&write_disk_info[index]->read_time_confidence,
&write_disk_info[index]->volume_serial_number,
index,
read_parameters->read_report_discard_threshold,
read_disk_info[index]->min_file_size,
read_disk_info[index]->min_file_age,
read_disk_info[index]->allow_compressed_files,
read_disk_info[index]->allow_encrypted_files,
read_disk_info[index]->allow_hidden_files,
read_disk_info[index]->allow_offline_files,
read_disk_info[index]->allow_temporary_files,
num_excluded_paths[index],
excluded_paths[index]);
if (groveler_statuses[index] != Grovel_disable)
{
if (groveler_statuses[index] == Grovel_ok ||
groveler_statuses[index] == Grovel_new ||
read_disk_info[index]->error_retry_groveling)
{
num_alive_partitions++;
}
else
{
ASSERT(groveler_statuses[index] == Grovel_error);
some_groveler_dead = true;
}
}
}
if (num_alive_partitions == 0)
{
if (some_groveler_dead)
{
eventlog.report_event(GROVMSG_ALL_GROVELERS_DEAD, ERROR_SUCCESS, 0);
}
else
{
eventlog.report_event(GROVMSG_ALL_GROVELERS_DISABLED, ERROR_SUCCESS, 0);
}
return;
}
cpu_load_determinable = false;
PDH_STATUS status = PdhOpenQuery(0, 0, &qhandle);
if (status == ERROR_SUCCESS)
{
ASSERT(qhandle != 0);
status = PdhAddCounter(qhandle, total_processor_time_path, 0, &ctr_handle);
if (status == ERROR_SUCCESS)
{
ASSERT(ctr_handle != 0);
cpu_load_determinable = true;
get_cpu_load();
}
else
{
PRINT_DEBUG_MSG(
(_T("GROVELER: PdhAddCounter returned error. PDH_STATUS = %lx\n"),
status));
}
}
else
{
PRINT_DEBUG_MSG((_T("GROVELER: PdhOpenQuery returned error. PDH_STATUS = %lx\n"),
status));
}
last_invokation_time = current_time;
event_timer.schedule(current_time + base_grovel_interval,
(void *)this, control_groveling);
}
CentralController::~CentralController()
{
ASSERT(this != 0);
ASSERT(num_partitions > 0);
if (cpu_load_determinable)
{
ASSERT(qhandle != 0);
PDH_STATUS status = PdhCloseQuery(qhandle);
if (status != ERROR_SUCCESS)
{
PRINT_DEBUG_MSG(
(_T("GROVELER: PdhCloseQuery returned error. PDH_STATUS = %lx\n"),
status));
}
qhandle = 0;
}
for (int index = 0; index < num_partitions; index++)
{
ASSERT(part_controllers[index] != 0);
delete part_controllers[index];
part_controllers[index] = 0;
}
ASSERT(part_controllers != 0);
delete[] part_controllers;
part_controllers = 0;
}
bool
CentralController::any_grovelers_alive()
{
ASSERT(this != 0);
return num_alive_partitions > 0;
}
void
CentralController::demarcate_foreground_batch(
int partition_index)
{
ASSERT(this != 0);
ASSERT(partition_index >= 0);
ASSERT(partition_index < num_partitions);
part_controllers[partition_index]->demarcate_foreground_batch();
}
void
CentralController::command_full_volume_scan(
int partition_index)
{
ASSERT(this != 0);
ASSERT(partition_index >= 0);
ASSERT(partition_index < num_partitions);
part_controllers[partition_index]->command_full_volume_scan();
}
void
CentralController::control_groveling(
void *context)
{
ASSERT(context != 0);
unsigned int invokation_time = GET_TICK_COUNT();
TRACE_PRINTF(TC_centctrl, 3, (_T("time: %d\n"), invokation_time));
TRACE_PRINTF(TC_centctrl, 3, (_T("\tCCcg -\tcontrolling groveling\n")));
CentralController *me = (CentralController *)context;
ASSERT(me->num_partitions > 0);
ASSERT(me->num_alive_partitions > 0);
if (SERVICE_GROVELING_PAUSED() || SERVICE_FOREGROUND_GROVELING())
{
TRACE_PRINTF(TC_centctrl, 1, (_T("\tCCcg -\tsuspending controller\n")));
SERVICE_SUSPENDING_CONTROLLER();
return; // return without scheduling another control_groveling()
}
int partition_index = -1;
double top_priority = DBL_MAX;
unsigned int time_delta = invokation_time - me->last_invokation_time;
ASSERT(signed(time_delta) >= 0);
for (int index = 0; index < me->num_partitions; index++)
{
me->part_controllers[index]->advance(time_delta);
if (me->part_controllers[index]->wait() == 0)
{
double partition_priority = me->part_controllers[index]->priority();
if (partition_priority < top_priority)
{
partition_index = index;
top_priority = partition_priority;
}
}
}
if (partition_index >= 0)
{
ASSERT(partition_index < me->num_partitions);
TRACE_PRINTF(TC_centctrl, 5,
(_T("\tCCcg -\tgroveling partition %d\n"), partition_index));
me->grovel_partition(partition_index);
}
else
{
TRACE_PRINTF(TC_centctrl, 4,
(_T("\tCCcg -\tno partition controllers ready to grovel.\n")));
}
int grovel_interval = me->max_response_lag;
ASSERT(grovel_interval > 0);
for (index = 0; index < me->num_partitions; index++)
{
int wait = me->part_controllers[index]->wait();
if (wait < grovel_interval)
{
grovel_interval = wait;
}
}
if (grovel_interval < me->working_grovel_interval)
{
grovel_interval = me->working_grovel_interval;
}
TRACE_PRINTF(TC_centctrl, 5,
(_T("\tCCcg -\tgrovel interval = %d\n"), grovel_interval));
me->last_invokation_time = invokation_time;
ASSERT(grovel_interval > 0);
event_timer.schedule(invokation_time + grovel_interval,
context, control_groveling);
}
void
CentralController::exhort_groveling(
void *context)
{
ASSERT(context != 0);
unsigned int invokation_time = GET_TICK_COUNT();
TRACE_PRINTF(TC_centctrl, 3, (_T("time: %d\n"), invokation_time));
TRACE_PRINTF(TC_centctrl, 3, (_T("\tCCcg -\texhorting groveling\n")));
CentralController *me = (CentralController *)context;
ASSERT(me->num_partitions > 0);
ASSERT(me->num_alive_partitions > 0);
if (SERVICE_GROVELING_PAUSED() || !SERVICE_FOREGROUND_GROVELING())
{
TRACE_PRINTF(TC_centctrl, 1, (_T("\tCCcg -\tsuspending exhorter\n")));
SERVICE_SUSPENDING_EXHORTER();
return; // return without scheduling another exhort_groveling()
}
for (int index = 0; index < me->num_partitions; index++)
{
me->foreground_partition_index =
(me->foreground_partition_index + 1) % me->num_partitions;
if (SERVICE_PARTITION_IN_FOREGROUND(me->foreground_partition_index))
{
break;
}
}
ASSERT(me->foreground_partition_index >= 0);
ASSERT(me->foreground_partition_index < me->num_partitions);
ASSERT(SERVICE_PARTITION_IN_FOREGROUND(me->foreground_partition_index));
TRACE_PRINTF(TC_centctrl, 5, (_T("\tCCcg -\tgroveling partition %d\n"),
me->foreground_partition_index));
me->grovel_partition(me->foreground_partition_index);
event_timer.schedule(invokation_time + me->working_grovel_interval,
context, exhort_groveling);
}
double
CentralController::get_cpu_load()
{
ASSERT(this != 0);
if (!cpu_load_determinable)
{
return 0.0;
}
ASSERT(qhandle != 0);
ASSERT(ctr_handle != 0);
PDH_STATUS status = PdhCollectQueryData(qhandle);
if (status != ERROR_SUCCESS)
{
PRINT_DEBUG_MSG(
(_T("GROVELER: PdhCollectQueryData returned error. PDH_STATUS = %lx\n"),
status));
return 0.0;
}
PDH_FMT_COUNTERVALUE pdh_value;
status =
PdhGetFormattedCounterValue(ctr_handle, PDH_FMT_LONG, 0, &pdh_value);
if (status != ERROR_SUCCESS)
{
PRINT_DEBUG_MSG(
(_T("GROVELER: PdhGetFormattedCounterValue returned error. PDH_STATUS = %lx\n"),
status));
return 0.0;
}
if (pdh_value.CStatus != ERROR_SUCCESS)
{
PRINT_DEBUG_MSG((_T("GROVELER: PDH_FMT_COUNTERVALUE::CStatus = %lx\n"), status));
return 0.0;
}
double cpu_load = double(pdh_value.longValue) / 100.0;
if (cpu_load < 0.0)
{
cpu_load = 0.0;
}
if (cpu_load > 1.0)
{
cpu_load = 1.0;
}
return cpu_load;
}
void
CentralController::grovel_partition(
int partition_index)
{
ASSERT(this != 0);
DWORD count_of_files_hashed;
DWORDLONG bytes_of_files_hashed;
DWORD count_of_files_matching;
DWORDLONG bytes_of_files_matching;
DWORD count_of_files_compared;
DWORDLONG bytes_of_files_compared;
DWORD count_of_files_merged;
DWORDLONG bytes_of_files_merged;
DWORD count_of_files_enqueued;
DWORD count_of_files_dequeued;
double cpu_load = get_cpu_load();
TRACE_PRINTF(TC_centctrl, 4, (_T("\tCCgp -\tcpu load = %f\n"), cpu_load));
ASSERT(cpu_load >= 0.0);
ASSERT(cpu_load <= 1.0);
bool ok = part_controllers[partition_index]->
control_operation(grovel_duration,
&count_of_files_hashed, &bytes_of_files_hashed,
&count_of_files_matching, &bytes_of_files_matching,
&count_of_files_compared, &bytes_of_files_compared,
&count_of_files_merged, &bytes_of_files_merged,
&count_of_files_enqueued, &count_of_files_dequeued,
cpu_load);
if (ok)
{
ASSERT(bytes_of_files_hashed >= count_of_files_hashed);
ASSERT(bytes_of_files_matching >= count_of_files_matching);
ASSERT(bytes_of_files_compared >= count_of_files_compared);
ASSERT(bytes_of_files_merged >= count_of_files_merged);
ASSERT(count_of_files_hashed >= count_of_files_matching);
ASSERT(bytes_of_files_hashed >= bytes_of_files_matching);
ASSERT(count_of_files_compared >= count_of_files_merged);
ASSERT(bytes_of_files_compared >= bytes_of_files_merged);
ASSERT(count_of_files_dequeued >= count_of_files_hashed);
TRACE_PRINTF(TC_centctrl, 3,
(_T("\tCCgp -\tpartition %d groveled.\n"), partition_index));
TRACE_PRINTF(TC_centctrl, 4,
(_T("\tCCgp -\tfiles hashed = %d\n"), count_of_files_hashed));
TRACE_PRINTF(TC_centctrl, 4,
(_T("\tCCgp -\tbytes hashed = %I64d\n"), bytes_of_files_hashed));
TRACE_PRINTF(TC_centctrl, 4,
(_T("\tCCgp -\tfiles matching = %d\n"), count_of_files_matching));
TRACE_PRINTF(TC_centctrl, 4,
(_T("\tCCgp -\tbytes matching = %I64d\n"),
bytes_of_files_matching));
TRACE_PRINTF(TC_centctrl, 4,
(_T("\tCCgp -\tfiles compared = %d\n"), count_of_files_matching));
TRACE_PRINTF(TC_centctrl, 4,
(_T("\tCCgp -\tbytes compared = %I64d\n"),
bytes_of_files_matching));
TRACE_PRINTF(TC_centctrl, 4,
(_T("\tCCgp -\tfiles merged = %d\n"), count_of_files_merged));
TRACE_PRINTF(TC_centctrl, 4,
(_T("\tCCgp -\tbytes merged = %I64d\n"), bytes_of_files_merged));
TRACE_PRINTF(TC_centctrl, 4,
(_T("\tCCgp -\tfiles enqueued = %d\n"), count_of_files_enqueued));
TRACE_PRINTF(TC_centctrl, 4,
(_T("\tCCgp -\tfiles dequeued = %d\n"), count_of_files_dequeued));
if (bytes_of_files_hashed > 0)
{
double sample_hash_match_ratio =
double(__int64(bytes_of_files_matching))
/ double(__int64(bytes_of_files_hashed));
ASSERT(sample_hash_match_ratio >= 0.0);
ASSERT(sample_hash_match_ratio <= 1.0);
TRACE_PRINTF(TC_centctrl, 4,
(_T("\tCCgp -\tsample hash match ratio = %f\n"),
sample_hash_match_ratio));
hash_match_ratio_filter.update_value(
sample_hash_match_ratio, count_of_files_hashed);
*hash_match_ratio = hash_match_ratio_filter.retrieve_value();
ASSERT(*hash_match_ratio >= 0.0);
ASSERT(*hash_match_ratio <= 1.0);
TRACE_PRINTF(TC_centctrl, 3,
(_T("\tCCgp -\tfiltered hash match ratio = %f\n"),
*hash_match_ratio));
}
if (bytes_of_files_compared > 0)
{
double sample_compare_match_ratio =
double(__int64(bytes_of_files_merged))
/ double(__int64(bytes_of_files_compared));
ASSERT(sample_compare_match_ratio >= 0.0);
ASSERT(sample_compare_match_ratio <= 1.0);
TRACE_PRINTF(TC_centctrl, 4,
(_T("\tCCgp -\tsample compare match ratio = %f\n"),
sample_compare_match_ratio));
compare_match_ratio_filter.update_value(
sample_compare_match_ratio, count_of_files_compared);
*compare_match_ratio = compare_match_ratio_filter.retrieve_value();
ASSERT(*compare_match_ratio >= 0.0);
ASSERT(*compare_match_ratio <= 1.0);
TRACE_PRINTF(TC_centctrl, 3,
(_T("\tCCgp -\tfiltered compare match ratio = %f\n"),
*compare_match_ratio));
}
if (count_of_files_dequeued > 0)
{
double sample_dequeue_hash_ratio =
double(__int64(count_of_files_hashed))
/ double(__int64(count_of_files_dequeued));
ASSERT(sample_dequeue_hash_ratio >= 0.0);
ASSERT(sample_dequeue_hash_ratio <= 1.0);
TRACE_PRINTF(TC_centctrl, 4,
(_T("\tCCgp -\tsample dequeue hash ratio = %f\n"),
sample_dequeue_hash_ratio));
dequeue_hash_ratio_filter.update_value(
sample_dequeue_hash_ratio, count_of_files_dequeued);
*dequeue_hash_ratio = dequeue_hash_ratio_filter.retrieve_value();
ASSERT(*dequeue_hash_ratio >= 0.0);
ASSERT(*dequeue_hash_ratio <= 1.0);
TRACE_PRINTF(TC_centctrl, 3,
(_T("\tCCgp -\tfiltered dequeue hash ratio = %f\n"),
*dequeue_hash_ratio));
}
}
else
{
TRACE_PRINTF(TC_centctrl, 1,
(_T("\tCCgp -\tpartition %d groveler dead.\n"), partition_index));
num_alive_partitions--;
if (num_alive_partitions <= 0)
{
ASSERT(num_alive_partitions == 0);
eventlog.report_event(GROVMSG_ALL_GROVELERS_DEAD, ERROR_SUCCESS, 0);
event_timer.halt();
return;
}
}
// get_cpu_load();
}