Some code refactoring in the thread pool module.
This commit is contained in:
parent
d0be7ad5a5
commit
f70ccb6a14
@ -28,7 +28,7 @@
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static const uint64_t MAGIC_NUMBER = 0x243F6A8885A308D3ull;
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#define BUFFER_SIZE 32768U
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#define BUFFER_SIZE 65536U
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// ==========================================================================
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// Auxiliary functions
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@ -70,6 +70,13 @@ int encrypt(const char *const passphrase, const CHR *const input_path, const CHR
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FILE *file_in = NULL, *file_out = NULL;
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int result = EXIT_FAILURE, status;
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uint8_t *buffer = malloc(BUFFER_SIZE * sizeof(uint8_t));
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if (!buffer)
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{
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FPUTS(T("Error: Failed to allocate the I/O buffer!\n\n"), stderr);
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goto clean_up;
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}
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if (open_files(&file_in, &file_out, input_path, output_path) != EXIT_SUCCESS)
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{
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goto clean_up;
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@ -111,10 +118,7 @@ int encrypt(const char *const passphrase, const CHR *const input_path, const CHR
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goto clean_up;
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}
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unsigned refresh_cycles = 0U;
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uint64_t bytes_read = 0U, clk_update = clock_read();
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uint8_t buffer[BUFFER_SIZE];
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uint64_t bytes_read = 0U, clk_now, clk_update = clk_now = clock_read();
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const uint64_t update_interval = (uint64_t)(clock_freq() * 1.0625);
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blake2s_t blake2s_state;
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@ -147,15 +151,11 @@ int encrypt(const char *const passphrase, const CHR *const input_path, const CHR
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{
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break; /*EOF*/
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}
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if (!(++refresh_cycles & 0x3))
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if (((clk_now = clock_read()) < clk_update) || (clk_now - clk_update > update_interval))
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{
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const uint64_t clk_now = clock_read();
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if ((clk_now < clk_update) || (clk_now - clk_update > update_interval))
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{
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FPRINTF(stderr, T("\b\b\b\b\b\b\b%5.1f%% "), (bytes_read / ((double)file_size)) * 100.0);
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fflush(stderr);
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clk_update = clk_now;
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}
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FPRINTF(stderr, T("\b\b\b\b\b\b\b%5.1f%% "), (bytes_read / ((double)file_size)) * 100.0);
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fflush(stderr);
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clk_update = clk_now;
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}
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}
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@ -238,7 +238,12 @@ clean_up:
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fclose(file_in);
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}
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slunkcrypt_bzero(buffer, BUFFER_SIZE);
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if (buffer)
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{
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slunkcrypt_bzero(buffer, BUFFER_SIZE * sizeof(uint8_t));
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free(buffer);
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}
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slunkcrypt_bzero(checksum_buffer, sizeof(uint64_t));
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slunkcrypt_bzero(&blake2s_state, sizeof(blake2s_t));
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slunkcrypt_bzero(&nonce, sizeof(uint64_t));
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@ -257,6 +262,13 @@ int decrypt(const char *const passphrase, const CHR *const input_path, const CHR
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FILE *file_in = NULL, *file_out = NULL;
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int result = EXIT_FAILURE, status;
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uint8_t *buffer = malloc(BUFFER_SIZE * sizeof(uint8_t));
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if (!buffer)
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{
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FPUTS(T("Error: Failed to allocate the I/O buffer!\n\n"), stderr);
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goto clean_up;
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}
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if (open_files(&file_in, &file_out, input_path, output_path) != EXIT_SUCCESS)
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{
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goto clean_up;
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@ -296,10 +308,7 @@ int decrypt(const char *const passphrase, const CHR *const input_path, const CHR
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goto clean_up;
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}
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unsigned refresh_cycles = 0U;
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uint64_t bytes_read = sizeof(uint64_t), clk_update = clock_read();
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uint8_t buffer[BUFFER_SIZE];
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uint64_t bytes_read = sizeof(uint64_t), clk_now, clk_update = clk_now = clock_read();
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const uint64_t update_interval = (uint64_t)(clock_freq() * 1.0625);
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const uint64_t read_limit = round_down(file_size, sizeof(uint64_t)) - (2U * sizeof(uint64_t));
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@ -333,15 +342,11 @@ int decrypt(const char *const passphrase, const CHR *const input_path, const CHR
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{
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break; /*EOF*/
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}
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if (!(++refresh_cycles & 0x3))
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if (((clk_now = clock_read()) < clk_update) || (clk_now - clk_update > update_interval))
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{
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const uint64_t clk_now = clock_read();
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if ((clk_now < clk_update) || (clk_now - clk_update > update_interval))
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{
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FPRINTF(stderr, T("\b\b\b\b\b\b\b%5.1f%% "), (bytes_read / ((double)read_limit)) * 100.0);
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fflush(stderr);
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clk_update = clk_now;
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}
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FPRINTF(stderr, T("\b\b\b\b\b\b\b%5.1f%% "), (bytes_read / ((double)read_limit)) * 100.0);
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fflush(stderr);
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clk_update = clk_now;
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}
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}
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@ -436,7 +441,12 @@ clean_up:
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fclose(file_in);
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}
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slunkcrypt_bzero(buffer, BUFFER_SIZE);
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if (buffer)
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{
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slunkcrypt_bzero(buffer, BUFFER_SIZE * sizeof(uint8_t));
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free(buffer);
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}
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slunkcrypt_bzero(checksum_buffer, sizeof(uint64_t));
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slunkcrypt_bzero(&blake2s_state, sizeof(blake2s_t));
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slunkcrypt_bzero(&nonce, sizeof(uint64_t));
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@ -22,7 +22,7 @@ const char *const SLUNKCRYPT_BUILD = __DATE__ ", " __TIME__;
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/* Utilities */
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#define BOOLIFY(X) (!!(X))
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#define THREAD_COUNT(X) (((X)->thread_pool != THRDPL_NULL) ? slunkcrypt_thrdpl_count((X)->thread_pool) : 1U)
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#define THREAD_COUNT(X) (((X)->thread_pool) ? slunkcrypt_thrdpl_count((X)->thread_pool) : 1U)
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// ==========================================================================
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// Data structures
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@ -53,7 +53,7 @@ crypt_data_t;
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typedef struct
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{
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thrdpl_t thread_pool;
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thrdpl_t *thread_pool;
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crypt_data_t data;
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}
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crypt_state_t;
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@ -395,7 +395,7 @@ void slunkcrypt_free(const slunkcrypt_t context)
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crypt_state_t *const state = (crypt_state_t*) context;
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if (state)
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{
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if (state->thread_pool != THRDPL_NULL)
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if (state->thread_pool)
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{
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slunkcrypt_thrdpl_destroy(state->thread_pool);
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}
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@ -5,11 +5,11 @@
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/* Internal */
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#include "thread.h"
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#include "slunkcrypt.h"
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#include "compiler.h"
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/* CRT */
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#include <stdlib.h>
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#include <string.h>
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/* PThread */
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#if defined(_MSC_VER) && !defined(_DLL)
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@ -23,9 +23,9 @@
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#endif
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/* States */
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#define THRD_STATE_IDLE 0
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#define THRD_STATE_WORK 1
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#define THRD_STATE_EXIT 2
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#define TSTATE_IDLE 0U
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#define TSTATE_WORK 1U
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#define TSTATE_EXIT 2U
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// ==========================================================================
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// Data types
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@ -42,21 +42,27 @@ thrdpl_task_t;
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typedef struct
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{
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const size_t *count;
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int state;
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size_t thread_count, pending;
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pthread_mutex_t mutex;
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pthread_cond_t cond;
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pthread_cond_t cond_pending;
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}
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thrdpl_shared_t;
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typedef struct
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{
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thrdpl_shared_t *shared;
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size_t state;
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pthread_cond_t cond_state;
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pthread_t thread;
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thrdpl_task_t task;
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}
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thrdpl_thread_t;
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typedef struct
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struct thrdpl_data_t
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{
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size_t thread_count;
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thrdpl_shared_t shared;
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thrdpl_thread_t thread_data[MAX_THREADS];
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}
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thrdpl_data_t;
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};
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// ==========================================================================
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// Utilities
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@ -85,6 +91,15 @@ while(0)
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} \
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while(0)
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#define PTHRD_COND_SIGNAL(X) do \
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{ \
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if (pthread_cond_signal((X)) != 0) \
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{ \
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abort(); \
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} \
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} \
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while(0)
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#define PTHRD_COND_BROADCAST(X) do \
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{ \
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if (pthread_cond_broadcast((X)) != 0) \
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@ -105,13 +120,10 @@ while(0)
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#define CHECK_IF_CANCELLED() do \
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{ \
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if (data->state == THRD_STATE_EXIT) \
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if (data->state == TSTATE_EXIT) \
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{ \
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if (pthread_mutex_unlock(&data->mutex) != 0) \
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{ \
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abort(); \
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} \
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return NULL; /* cancelled */ \
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PTHRD_MUTEX_UNLOCK(&shared->mutex); \
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return NULL; \
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} \
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} \
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while(0)
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@ -123,29 +135,37 @@ while(0)
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static void *worker_thread_main(void *const arg)
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{
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thrdpl_thread_t *const data = (thrdpl_thread_t*) arg;
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thrdpl_shared_t *const shared = (thrdpl_shared_t*) data->shared;
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thrdpl_task_t *task;
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for (;;)
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{
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PTHRD_MUTEX_LOCK(&data->mutex);
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PTHRD_MUTEX_LOCK(&shared->mutex);
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CHECK_IF_CANCELLED();
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while (data->state != THRD_STATE_WORK)
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while (data->state != TSTATE_WORK)
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{
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PTHRD_COND_WAIT(&data->cond, &data->mutex);
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PTHRD_COND_WAIT(&data->cond_state, &shared->mutex);
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CHECK_IF_CANCELLED();
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}
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task = &data->task;
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PTHRD_MUTEX_UNLOCK(&data->mutex);
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PTHRD_MUTEX_UNLOCK(&shared->mutex);
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task->worker(*data->count, task->context, task->buffer, task->length);
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task->worker(shared->thread_count, task->context, task->buffer, task->length);
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PTHRD_MUTEX_LOCK(&data->mutex);
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PTHRD_MUTEX_LOCK(&shared->mutex);
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CHECK_IF_CANCELLED();
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data->state = THRD_STATE_IDLE;
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PTHRD_COND_BROADCAST(&data->cond);
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PTHRD_MUTEX_UNLOCK(&data->mutex);
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data->state = TSTATE_IDLE;
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if (!(--shared->pending))
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{
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PTHRD_COND_BROADCAST(&shared->cond_pending);
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}
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PTHRD_MUTEX_UNLOCK(&shared->mutex);
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PTHRD_COND_SIGNAL(&data->cond_state);
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}
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}
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@ -175,42 +195,34 @@ static size_t detect_cpu_count(void)
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// Manage threads
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// ==========================================================================
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static int create_worker_thread(thrdpl_thread_t *const thread_data, const size_t *const count)
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static int create_worker(thrdpl_shared_t *const shared, thrdpl_thread_t *const thread_data)
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{
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thread_data->count = count;
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thread_data->state = THRD_STATE_IDLE;
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thread_data->state = TSTATE_IDLE;
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thread_data->shared = shared;
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if (pthread_mutex_init(&thread_data->mutex, NULL) != 0)
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if (pthread_cond_init(&thread_data->cond_state, NULL) != 0)
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{
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return -1;
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}
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if (pthread_cond_init(&thread_data->cond, NULL) != 0)
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{
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pthread_mutex_destroy(&thread_data->mutex);
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return -1;
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}
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if (pthread_create(&thread_data->thread, NULL, worker_thread_main, thread_data) != 0)
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{
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pthread_cond_destroy(&thread_data->cond);
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pthread_mutex_destroy(&thread_data->mutex);
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pthread_cond_destroy(&thread_data->cond_state);
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return -1;
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}
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return 0;
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}
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static int destroy_worker_thread(thrdpl_thread_t *const thread_data)
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static int destroy_worker(thrdpl_thread_t *const thread_data)
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{
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PTHRD_MUTEX_LOCK(&thread_data->mutex);
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thread_data->state = THRD_STATE_EXIT;
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PTHRD_COND_BROADCAST(&thread_data->cond);
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PTHRD_MUTEX_UNLOCK(&thread_data->mutex);
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PTHRD_MUTEX_LOCK(&thread_data->shared->mutex);
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thread_data->state = TSTATE_EXIT;
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PTHRD_MUTEX_UNLOCK(&thread_data->shared->mutex);
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PTHRD_COND_BROADCAST(&thread_data->cond_state);
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pthread_join(thread_data->thread, NULL);
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pthread_mutex_destroy(&thread_data->mutex);
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pthread_cond_destroy(&thread_data->cond);
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pthread_cond_destroy(&thread_data->cond_state);
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return 0;
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}
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@ -219,116 +231,114 @@ static int destroy_worker_thread(thrdpl_thread_t *const thread_data)
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// Thread pool API
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// ==========================================================================
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thrdpl_t slunkcrypt_thrdpl_create(const size_t count)
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thrdpl_t *slunkcrypt_thrdpl_create(const size_t count)
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{
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size_t i, j;
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thrdpl_data_t *pool = NULL;
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thrdpl_t *thrdpl = NULL;
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const size_t cpu_count = bound(1U, (count > 0U) ? count : detect_cpu_count(), MAX_THREADS);
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if (cpu_count < 2U)
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{
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return THRDPL_NULL;
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return NULL;
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}
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if (!(pool = (thrdpl_data_t*)malloc(sizeof(thrdpl_data_t))))
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if (!(thrdpl = (thrdpl_t*)malloc(sizeof(thrdpl_t))))
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{
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return THRDPL_NULL;
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return NULL;
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}
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slunkcrypt_bzero(pool, sizeof(thrdpl_data_t));
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pool->thread_count = cpu_count;
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memset(thrdpl, 0, sizeof(thrdpl_t));
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thrdpl->shared.thread_count = cpu_count;
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for (i = 0U; i < pool->thread_count; ++i)
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if (pthread_mutex_init(&thrdpl->shared.mutex, NULL) != 0)
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{
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if (create_worker_thread(&pool->thread_data[i], &pool->thread_count) != 0)
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goto failure;
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}
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if (pthread_cond_init(&thrdpl->shared.cond_pending, NULL) != 0)
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{
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pthread_mutex_destroy(&thrdpl->shared.mutex);
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goto failure;
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}
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for (i = 0U; i < cpu_count; ++i)
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{
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if (create_worker(&thrdpl->shared, &thrdpl->thread_data[i]) != 0)
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{
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for (j = 0U; j < i; ++j)
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{
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destroy_worker_thread(&pool->thread_data[j]);
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destroy_worker(&thrdpl->thread_data[j]);
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}
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pthread_cond_destroy(&thrdpl->shared.cond_pending);
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pthread_mutex_destroy(&thrdpl->shared.mutex);
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goto failure;
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}
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}
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return (thrdpl_t)pool;
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return thrdpl;
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failure:
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free(pool);
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return (thrdpl_t)NULL;
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free(thrdpl);
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return NULL;
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}
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size_t slunkcrypt_thrdpl_count(const thrdpl_t thrdpl)
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size_t slunkcrypt_thrdpl_count(const thrdpl_t *const thrdpl)
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{
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thrdpl_data_t *const pool = (thrdpl_data_t*) thrdpl;
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return pool->thread_count;
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return thrdpl->shared.thread_count;
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}
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void slunkcrypt_thrdpl_exec(const thrdpl_t thrdpl, const size_t index, const thrdpl_worker_t worker, void *const context, uint8_t *const buffer, const size_t length)
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void slunkcrypt_thrdpl_exec(thrdpl_t *const thrdpl, const size_t index, const thrdpl_worker_t worker, void *const context, uint8_t *const buffer, const size_t length)
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{
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thrdpl_data_t *const pool = (thrdpl_data_t*) thrdpl;
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thrdpl_thread_t *const thread = &pool->thread_data[index];
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thrdpl_thread_t *const thread = &thrdpl->thread_data[index];
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PTHRD_MUTEX_LOCK(&thread->mutex);
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PTHRD_MUTEX_LOCK(&thrdpl->shared.mutex);
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while ((thread->state != THRD_STATE_IDLE) && (thread->state != THRD_STATE_EXIT))
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while ((thread->state != TSTATE_IDLE) && (thread->state != TSTATE_EXIT))
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{
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if (pthread_cond_wait(&thread->cond, &thread->mutex) != 0)
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{
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abort();
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}
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PTHRD_COND_WAIT(&thread->cond_state, &thrdpl->shared.mutex);
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}
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if (thread->state == THRD_STATE_EXIT)
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if (thread->state == TSTATE_EXIT)
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{
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abort(); /*this is not supposed to happen!*/
|
||||
}
|
||||
|
||||
thread->state = TSTATE_WORK;
|
||||
thread->task.worker = worker;
|
||||
thread->task.context = context;
|
||||
thread->task.buffer = buffer;
|
||||
thread->task.length = length;
|
||||
thread->state = THRD_STATE_WORK;
|
||||
|
||||
PTHRD_COND_BROADCAST(&thread->cond);
|
||||
PTHRD_MUTEX_UNLOCK(&thread->mutex);
|
||||
++thrdpl->shared.pending;
|
||||
|
||||
PTHRD_MUTEX_UNLOCK(&thrdpl->shared.mutex);
|
||||
PTHRD_COND_SIGNAL(&thread->cond_state);
|
||||
}
|
||||
|
||||
void slunkcrypt_thrdpl_await(const thrdpl_t thrdpl)
|
||||
void slunkcrypt_thrdpl_await(thrdpl_t *const thrdpl)
|
||||
{
|
||||
PTHRD_MUTEX_LOCK(&thrdpl->shared.mutex);
|
||||
|
||||
while (thrdpl->shared.pending)
|
||||
{
|
||||
PTHRD_COND_WAIT(&thrdpl->shared.cond_pending, &thrdpl->shared.mutex);
|
||||
}
|
||||
|
||||
PTHRD_MUTEX_UNLOCK(&thrdpl->shared.mutex);
|
||||
}
|
||||
|
||||
void slunkcrypt_thrdpl_destroy(thrdpl_t *const thrdpl)
|
||||
{
|
||||
size_t i;
|
||||
thrdpl_data_t *const pool = (thrdpl_data_t*) thrdpl;
|
||||
|
||||
for (i = 0; i < pool->thread_count; ++i)
|
||||
if (thrdpl)
|
||||
{
|
||||
if (pthread_mutex_lock(&pool->thread_data[i].mutex) != 0)
|
||||
for (i = 0U; i < thrdpl->shared.thread_count; ++i)
|
||||
{
|
||||
abort();
|
||||
}
|
||||
while ((pool->thread_data[i].state != THRD_STATE_IDLE) && (pool->thread_data[i].state != THRD_STATE_EXIT))
|
||||
{
|
||||
if (pthread_cond_wait(&pool->thread_data[i].cond, &pool->thread_data[i].mutex) != 0)
|
||||
{
|
||||
abort();
|
||||
}
|
||||
}
|
||||
if (pthread_mutex_unlock(&pool->thread_data[i].mutex) != 0)
|
||||
{
|
||||
abort();
|
||||
destroy_worker(&thrdpl->thread_data[i]);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void slunkcrypt_thrdpl_destroy(const thrdpl_t thrdpl)
|
||||
{
|
||||
size_t i;
|
||||
thrdpl_data_t *const pool = (thrdpl_data_t*) thrdpl;
|
||||
if (pool)
|
||||
{
|
||||
for (i = 0U; i < pool->thread_count; ++i)
|
||||
{
|
||||
destroy_worker_thread(&pool->thread_data[i]);
|
||||
}
|
||||
slunkcrypt_bzero(pool, sizeof(thrdpl_data_t));
|
||||
free(pool);
|
||||
pthread_cond_destroy(&thrdpl->shared.cond_pending);
|
||||
pthread_mutex_destroy(&thrdpl->shared.mutex);
|
||||
free(thrdpl);
|
||||
}
|
||||
}
|
||||
|
@ -9,16 +9,15 @@
|
||||
#include <stdlib.h>
|
||||
#include <stdint.h>
|
||||
|
||||
#define MAX_THREADS 16U
|
||||
#define THRDPL_NULL ((thrdpl_t)NULL)
|
||||
#define MAX_THREADS 32U
|
||||
|
||||
typedef void (*thrdpl_worker_t)(const size_t thread_count, void *const context, uint8_t *const buffer, const size_t length);
|
||||
typedef uintptr_t thrdpl_t;
|
||||
typedef struct thrdpl_data_t thrdpl_t;
|
||||
|
||||
thrdpl_t slunkcrypt_thrdpl_create(const size_t count);
|
||||
size_t slunkcrypt_thrdpl_count(const thrdpl_t thrdpl);
|
||||
void slunkcrypt_thrdpl_exec(const thrdpl_t thrdpl, const size_t index, const thrdpl_worker_t worker, void *const context, uint8_t *const buffer, const size_t length);
|
||||
void slunkcrypt_thrdpl_await(const thrdpl_t thrdpl);
|
||||
void slunkcrypt_thrdpl_destroy(const thrdpl_t thrdpl);
|
||||
thrdpl_t *slunkcrypt_thrdpl_create(const size_t count);
|
||||
size_t slunkcrypt_thrdpl_count(const thrdpl_t *const thrdpl);
|
||||
void slunkcrypt_thrdpl_exec(thrdpl_t *const thrdpl, const size_t index, const thrdpl_worker_t worker, void *const context, uint8_t *const buffer, const size_t length);
|
||||
void slunkcrypt_thrdpl_await(thrdpl_t *const thrdpl);
|
||||
void slunkcrypt_thrdpl_destroy(thrdpl_t *const thrdpl);
|
||||
|
||||
#endif
|
||||
|
Loading…
Reference in New Issue
Block a user