133 lines
4.1 KiB
C
133 lines
4.1 KiB
C
#include "record.h"
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#include "check.h"
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#include "memmgr.h"
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#include <cmsis_os2.h>
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#include <m-string.h>
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#include <m-dict.h>
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#define FURI_RECORD_FLAG_UPDATED 0x00000001U
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DICT_SET_DEF(osThreadIdSet, uint32_t)
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typedef struct {
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void* data;
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osThreadId_t owner;
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osThreadIdSet_t holders;
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} FuriRecord;
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DICT_DEF2(FuriRecordDict, string_t, STRING_OPLIST, FuriRecord, M_POD_OPLIST)
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typedef struct {
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osMutexId_t records_mutex;
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FuriRecordDict_t records;
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} FuriRecordData;
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static FuriRecordData* furi_record_data = NULL;
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void furi_record_init() {
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furi_record_data = furi_alloc(sizeof(FuriRecordData));
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furi_record_data->records_mutex = osMutexNew(NULL);
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furi_check(furi_record_data->records_mutex);
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FuriRecordDict_init(furi_record_data->records);
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}
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FuriRecord* furi_record_get_or_create(string_t name_str) {
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furi_assert(furi_record_data);
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FuriRecord* record = FuriRecordDict_get(furi_record_data->records, name_str);
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if(!record) {
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FuriRecord new_record;
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new_record.data = NULL;
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new_record.owner = NULL;
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osThreadIdSet_init(new_record.holders);
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FuriRecordDict_set_at(furi_record_data->records, name_str, new_record);
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record = FuriRecordDict_get(furi_record_data->records, name_str);
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}
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return record;
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}
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void furi_record_create(const char* name, void* data) {
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furi_assert(furi_record_data);
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osThreadId_t thread_id = osThreadGetId();
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string_t name_str;
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string_init_set_str(name_str, name);
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// Acquire mutex
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furi_check(osMutexAcquire(furi_record_data->records_mutex, osWaitForever) == osOK);
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FuriRecord* record = furi_record_get_or_create(name_str);
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record->data = data;
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record->owner = thread_id;
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// For each holder set event flag
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osThreadIdSet_it_t it;
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for(osThreadIdSet_it(it, record->holders); !osThreadIdSet_end_p(it); osThreadIdSet_next(it)) {
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osThreadFlagsSet((osThreadId_t)*osThreadIdSet_ref(it), FURI_RECORD_FLAG_UPDATED);
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}
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// Release mutex
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furi_check(osMutexRelease(furi_record_data->records_mutex) == osOK);
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string_clear(name_str);
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}
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bool furi_record_destroy(const char* name) {
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furi_assert(furi_record_data);
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osThreadId_t thread_id = osThreadGetId();
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string_t name_str;
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string_init_set_str(name_str, name);
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bool destroyed = false;
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furi_check(osMutexAcquire(furi_record_data->records_mutex, osWaitForever) == osOK);
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FuriRecord* record = FuriRecordDict_get(furi_record_data->records, name_str);
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if(record && record->owner == thread_id && osThreadIdSet_size(record->holders) == 0) {
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osThreadIdSet_clear(record->holders);
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FuriRecordDict_erase(furi_record_data->records, name_str);
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destroyed = true;
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}
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furi_check(osMutexRelease(furi_record_data->records_mutex) == osOK);
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string_clear(name_str);
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return destroyed;
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}
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void* furi_record_open(const char* name) {
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furi_assert(furi_record_data);
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osThreadId_t thread_id = osThreadGetId();
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string_t name_str;
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string_init_set_str(name_str, name);
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FuriRecord* record = NULL;
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while(1) {
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furi_check(osMutexAcquire(furi_record_data->records_mutex, osWaitForever) == osOK);
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record = furi_record_get_or_create(name_str);
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osThreadIdSet_push(record->holders, (uint32_t)thread_id);
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furi_check(osMutexRelease(furi_record_data->records_mutex) == osOK);
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// Check if owner is already arrived
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if(record->owner) {
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break;
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}
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// Wait for thread flag to appear
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osThreadFlagsWait(FURI_RECORD_FLAG_UPDATED, osFlagsWaitAny, osWaitForever);
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}
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string_clear(name_str);
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return record->data;
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}
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void furi_record_close(const char* name) {
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furi_assert(furi_record_data);
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osThreadId_t thread_id = osThreadGetId();
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string_t name_str;
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string_init_set_str(name_str, name);
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furi_check(osMutexAcquire(furi_record_data->records_mutex, osWaitForever) == osOK);
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FuriRecord* record = FuriRecordDict_get(furi_record_data->records, name_str);
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osThreadIdSet_erase(record->holders, (uint32_t)thread_id);
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furi_check(osMutexRelease(furi_record_data->records_mutex) == osOK);
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string_clear(name_str);
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}
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