Muldersoft/SlunkCrypt
Muldersoft/SlunkCrypt
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Some code refactoring in the thread pool module.

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This commit is contained in:
LoRd_MuldeR 2022-03-24 21:25:32 +01:00
parent d0be7ad5a5
commit f70ccb6a14
Signed by: mulder
GPG Key ID: 2B5913365F57E03F
4 changed files with 162 additions and 143 deletions
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52
frontend/src/crypt.c
View File

@ -28,7 +28,7 @@
static const uint64_t MAGIC_NUMBER = 0x243F6A8885A308D3ull;
#define BUFFER_SIZE 32768U
#define BUFFER_SIZE 65536U
// ==========================================================================
// Auxiliary functions
@ -70,6 +70,13 @@ int encrypt(const char *const passphrase, const CHR *const input_path, const CHR
FILE *file_in = NULL, *file_out = NULL;
int result = EXIT_FAILURE, status;
uint8_t *buffer = malloc(BUFFER_SIZE * sizeof(uint8_t));
if (!buffer)
{
FPUTS(T("Error: Failed to allocate the I/O buffer!\n\n"), stderr);
goto clean_up;
}
if (open_files(&file_in, &file_out, input_path, output_path) != EXIT_SUCCESS)
{
goto clean_up;
@ -111,10 +118,7 @@ int encrypt(const char *const passphrase, const CHR *const input_path, const CHR
goto clean_up;
}
unsigned refresh_cycles = 0U;
uint64_t bytes_read = 0U, clk_update = clock_read();
uint8_t buffer[BUFFER_SIZE];
uint64_t bytes_read = 0U, clk_now, clk_update = clk_now = clock_read();
const uint64_t update_interval = (uint64_t)(clock_freq() * 1.0625);
blake2s_t blake2s_state;
@ -147,17 +151,13 @@ int encrypt(const char *const passphrase, const CHR *const input_path, const CHR
{
break; /*EOF*/
}
if (!(++refresh_cycles & 0x3))
{
const uint64_t clk_now = clock_read();
if ((clk_now < clk_update) || (clk_now - clk_update > update_interval))
if (((clk_now = clock_read()) < clk_update) || (clk_now - clk_update > update_interval))
{
FPRINTF(stderr, T("\b\b\b\b\b\b\b%5.1f%% "), (bytes_read / ((double)file_size)) * 100.0);
fflush(stderr);
clk_update = clk_now;
}
}
}
if (ferror(file_in))
{
@ -238,7 +238,12 @@ clean_up:
fclose(file_in);
}
slunkcrypt_bzero(buffer, BUFFER_SIZE);
if (buffer)
{
slunkcrypt_bzero(buffer, BUFFER_SIZE * sizeof(uint8_t));
free(buffer);
}
slunkcrypt_bzero(checksum_buffer, sizeof(uint64_t));
slunkcrypt_bzero(&blake2s_state, sizeof(blake2s_t));
slunkcrypt_bzero(&nonce, sizeof(uint64_t));
@ -257,6 +262,13 @@ int decrypt(const char *const passphrase, const CHR *const input_path, const CHR
FILE *file_in = NULL, *file_out = NULL;
int result = EXIT_FAILURE, status;
uint8_t *buffer = malloc(BUFFER_SIZE * sizeof(uint8_t));
if (!buffer)
{
FPUTS(T("Error: Failed to allocate the I/O buffer!\n\n"), stderr);
goto clean_up;
}
if (open_files(&file_in, &file_out, input_path, output_path) != EXIT_SUCCESS)
{
goto clean_up;
@ -296,10 +308,7 @@ int decrypt(const char *const passphrase, const CHR *const input_path, const CHR
goto clean_up;
}
unsigned refresh_cycles = 0U;
uint64_t bytes_read = sizeof(uint64_t), clk_update = clock_read();
uint8_t buffer[BUFFER_SIZE];
uint64_t bytes_read = sizeof(uint64_t), clk_now, clk_update = clk_now = clock_read();
const uint64_t update_interval = (uint64_t)(clock_freq() * 1.0625);
const uint64_t read_limit = round_down(file_size, sizeof(uint64_t)) - (2U * sizeof(uint64_t));
@ -333,17 +342,13 @@ int decrypt(const char *const passphrase, const CHR *const input_path, const CHR
{
break; /*EOF*/
}
if (!(++refresh_cycles & 0x3))
{
const uint64_t clk_now = clock_read();
if ((clk_now < clk_update) || (clk_now - clk_update > update_interval))
if (((clk_now = clock_read()) < clk_update) || (clk_now - clk_update > update_interval))
{
FPRINTF(stderr, T("\b\b\b\b\b\b\b%5.1f%% "), (bytes_read / ((double)read_limit)) * 100.0);
fflush(stderr);
clk_update = clk_now;
}
}
}
if (ferror(file_in))
{
@ -436,7 +441,12 @@ clean_up:
fclose(file_in);
}
slunkcrypt_bzero(buffer, BUFFER_SIZE);
if (buffer)
{
slunkcrypt_bzero(buffer, BUFFER_SIZE * sizeof(uint8_t));
free(buffer);
}
slunkcrypt_bzero(checksum_buffer, sizeof(uint64_t));
slunkcrypt_bzero(&blake2s_state, sizeof(blake2s_t));
slunkcrypt_bzero(&nonce, sizeof(uint64_t));

6
libslunkcrypt/src/slunkcrypt.c
View File

@ -22,7 +22,7 @@ const char *const SLUNKCRYPT_BUILD = __DATE__ ", " __TIME__;
/* Utilities */
#define BOOLIFY(X) (!!(X))
#define THREAD_COUNT(X) (((X)->thread_pool != THRDPL_NULL) ? slunkcrypt_thrdpl_count((X)->thread_pool) : 1U)
#define THREAD_COUNT(X) (((X)->thread_pool) ? slunkcrypt_thrdpl_count((X)->thread_pool) : 1U)
// ==========================================================================
// Data structures
@ -53,7 +53,7 @@ crypt_data_t;
typedef struct
{
thrdpl_t thread_pool;
thrdpl_t *thread_pool;
crypt_data_t data;
}
crypt_state_t;
@ -395,7 +395,7 @@ void slunkcrypt_free(const slunkcrypt_t context)
crypt_state_t *const state = (crypt_state_t*) context;
if (state)
{
if (state->thread_pool != THRDPL_NULL)
if (state->thread_pool)
{
slunkcrypt_thrdpl_destroy(state->thread_pool);
}

220
libslunkcrypt/src/thread.c
View File

@ -5,11 +5,11 @@
/* Internal */
#include "thread.h"
#include "slunkcrypt.h"
#include "compiler.h"
/* CRT */
#include <stdlib.h>
#include <string.h>
/* PThread */
#if defined(_MSC_VER) && !defined(_DLL)
@ -23,9 +23,9 @@
#endif
/* States */
#define THRD_STATE_IDLE 0
#define THRD_STATE_WORK 1
#define THRD_STATE_EXIT 2
#define TSTATE_IDLE 0U
#define TSTATE_WORK 1U
#define TSTATE_EXIT 2U
// ==========================================================================
// Data types
@ -42,21 +42,27 @@ thrdpl_task_t;
typedef struct
{
const size_t *count;
int state;
size_t thread_count, pending;
pthread_mutex_t mutex;
pthread_cond_t cond;
pthread_cond_t cond_pending;
}
thrdpl_shared_t;
typedef struct
{
thrdpl_shared_t *shared;
size_t state;
pthread_cond_t cond_state;
pthread_t thread;
thrdpl_task_t task;
}
thrdpl_thread_t;
typedef struct
struct thrdpl_data_t
{
size_t thread_count;
thrdpl_shared_t shared;
thrdpl_thread_t thread_data[MAX_THREADS];
}
thrdpl_data_t;
};
// ==========================================================================
// Utilities
@ -85,6 +91,15 @@ while(0)
} \
while(0)
#define PTHRD_COND_SIGNAL(X) do \
{ \
if (pthread_cond_signal((X)) != 0) \
{ \
abort(); \
} \
} \
while(0)
#define PTHRD_COND_BROADCAST(X) do \
{ \
if (pthread_cond_broadcast((X)) != 0) \
@ -105,13 +120,10 @@ while(0)
#define CHECK_IF_CANCELLED() do \
{ \
if (data->state == THRD_STATE_EXIT) \
if (data->state == TSTATE_EXIT) \
{ \
if (pthread_mutex_unlock(&data->mutex) != 0) \
{ \
abort(); \
} \
return NULL; /* cancelled */ \
PTHRD_MUTEX_UNLOCK(&shared->mutex); \
return NULL; \
} \
} \
while(0)
@ -123,29 +135,37 @@ while(0)
static void *worker_thread_main(void *const arg)
{
thrdpl_thread_t *const data = (thrdpl_thread_t*) arg;
thrdpl_shared_t *const shared = (thrdpl_shared_t*) data->shared;
thrdpl_task_t *task;
for (;;)
{
PTHRD_MUTEX_LOCK(&data->mutex);
PTHRD_MUTEX_LOCK(&shared->mutex);
CHECK_IF_CANCELLED();
while (data->state != THRD_STATE_WORK)
while (data->state != TSTATE_WORK)
{
PTHRD_COND_WAIT(&data->cond, &data->mutex);
PTHRD_COND_WAIT(&data->cond_state, &shared->mutex);
CHECK_IF_CANCELLED();
}
task = &data->task;
PTHRD_MUTEX_UNLOCK(&data->mutex);
PTHRD_MUTEX_UNLOCK(&shared->mutex);
task->worker(*data->count, task->context, task->buffer, task->length);
task->worker(shared->thread_count, task->context, task->buffer, task->length);
PTHRD_MUTEX_LOCK(&data->mutex);
PTHRD_MUTEX_LOCK(&shared->mutex);
CHECK_IF_CANCELLED();
data->state = THRD_STATE_IDLE;
PTHRD_COND_BROADCAST(&data->cond);
PTHRD_MUTEX_UNLOCK(&data->mutex);
data->state = TSTATE_IDLE;
if (!(--shared->pending))
{
PTHRD_COND_BROADCAST(&shared->cond_pending);
}
PTHRD_MUTEX_UNLOCK(&shared->mutex);
PTHRD_COND_SIGNAL(&data->cond_state);
}
}
@ -175,42 +195,34 @@ static size_t detect_cpu_count(void)
// Manage threads
// ==========================================================================
static int create_worker_thread(thrdpl_thread_t *const thread_data, const size_t *const count)
static int create_worker(thrdpl_shared_t *const shared, thrdpl_thread_t *const thread_data)
{
thread_data->count = count;
thread_data->state = THRD_STATE_IDLE;
thread_data->state = TSTATE_IDLE;
thread_data->shared = shared;
if (pthread_mutex_init(&thread_data->mutex, NULL) != 0)
if (pthread_cond_init(&thread_data->cond_state, NULL) != 0)
{
return -1;
}
if (pthread_cond_init(&thread_data->cond, NULL) != 0)
{
pthread_mutex_destroy(&thread_data->mutex);
return -1;
}
if (pthread_create(&thread_data->thread, NULL, worker_thread_main, thread_data) != 0)
{
pthread_cond_destroy(&thread_data->cond);
pthread_mutex_destroy(&thread_data->mutex);
pthread_cond_destroy(&thread_data->cond_state);
return -1;
}
return 0;
}
static int destroy_worker_thread(thrdpl_thread_t *const thread_data)
static int destroy_worker(thrdpl_thread_t *const thread_data)
{
PTHRD_MUTEX_LOCK(&thread_data->mutex);
thread_data->state = THRD_STATE_EXIT;
PTHRD_COND_BROADCAST(&thread_data->cond);
PTHRD_MUTEX_UNLOCK(&thread_data->mutex);
PTHRD_MUTEX_LOCK(&thread_data->shared->mutex);
thread_data->state = TSTATE_EXIT;
PTHRD_MUTEX_UNLOCK(&thread_data->shared->mutex);
PTHRD_COND_BROADCAST(&thread_data->cond_state);
pthread_join(thread_data->thread, NULL);
pthread_mutex_destroy(&thread_data->mutex);
pthread_cond_destroy(&thread_data->cond);
pthread_cond_destroy(&thread_data->cond_state);
return 0;
}
@ -219,116 +231,114 @@ static int destroy_worker_thread(thrdpl_thread_t *const thread_data)
// Thread pool API
// ==========================================================================
thrdpl_t slunkcrypt_thrdpl_create(const size_t count)
thrdpl_t *slunkcrypt_thrdpl_create(const size_t count)
{
size_t i, j;
thrdpl_data_t *pool = NULL;
thrdpl_t *thrdpl = NULL;
const size_t cpu_count = bound(1U, (count > 0U) ? count : detect_cpu_count(), MAX_THREADS);
if (cpu_count < 2U)
{
return THRDPL_NULL;
return NULL;
}
if (!(pool = (thrdpl_data_t*)malloc(sizeof(thrdpl_data_t))))
if (!(thrdpl = (thrdpl_t*)malloc(sizeof(thrdpl_t))))
{
return THRDPL_NULL;
return NULL;
}
slunkcrypt_bzero(pool, sizeof(thrdpl_data_t));
pool->thread_count = cpu_count;
memset(thrdpl, 0, sizeof(thrdpl_t));
thrdpl->shared.thread_count = cpu_count;
for (i = 0U; i < pool->thread_count; ++i)
if (pthread_mutex_init(&thrdpl->shared.mutex, NULL) != 0)
{
if (create_worker_thread(&pool->thread_data[i], &pool->thread_count) != 0)
goto failure;
}
if (pthread_cond_init(&thrdpl->shared.cond_pending, NULL) != 0)
{
pthread_mutex_destroy(&thrdpl->shared.mutex);
goto failure;
}
for (i = 0U; i < cpu_count; ++i)
{
if (create_worker(&thrdpl->shared, &thrdpl->thread_data[i]) != 0)
{
for (j = 0U; j < i; ++j)
{
destroy_worker_thread(&pool->thread_data[j]);
destroy_worker(&thrdpl->thread_data[j]);
}
pthread_cond_destroy(&thrdpl->shared.cond_pending);
pthread_mutex_destroy(&thrdpl->shared.mutex);
goto failure;
}
}
return (thrdpl_t)pool;
return thrdpl;
failure:
free(pool);
return (thrdpl_t)NULL;
free(thrdpl);
return NULL;
}
size_t slunkcrypt_thrdpl_count(const thrdpl_t thrdpl)
size_t slunkcrypt_thrdpl_count(const thrdpl_t *const thrdpl)
{
thrdpl_data_t *const pool = (thrdpl_data_t*) thrdpl;
return pool->thread_count;
return thrdpl->shared.thread_count;
}
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_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)
{
thrdpl_data_t *const pool = (thrdpl_data_t*) thrdpl;
thrdpl_thread_t *const thread = &pool->thread_data[index];
thrdpl_thread_t *const thread = &thrdpl->thread_data[index];
PTHRD_MUTEX_LOCK(&thread->mutex);
PTHRD_MUTEX_LOCK(&thrdpl->shared.mutex);
while ((thread->state != THRD_STATE_IDLE) && (thread->state != THRD_STATE_EXIT))
while ((thread->state != TSTATE_IDLE) && (thread->state != TSTATE_EXIT))
{
if (pthread_cond_wait(&thread->cond, &thread->mutex) != 0)
{
abort();
}
PTHRD_COND_WAIT(&thread->cond_state, &thrdpl->shared.mutex);
}
if (thread->state == THRD_STATE_EXIT)
if (thread->state == TSTATE_EXIT)
{
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);
}
}

15
libslunkcrypt/src/thread.h
View File

@ -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