IABSD.fr/xenocara/lib/pixman/test/thread-test.c

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  Commit

• Author : matthieu
  Date : 2016-10-01 10:17:43
  Hash : cb8938ec
  Message : Update to pixman 0.34.0.

• lib/pixman/test/thread-test.c

• #include "utils.h"
  
  #ifndef HAVE_PTHREADS
  
  int main ()
  {
      printf ("Skipped thread-test - pthreads not supported\n");
      return 0;
  }
  
  #else
  
  #include <stdlib.h>
  #include <pthread.h>
  
  typedef struct
  {
      int       thread_no;
      uint32_t *dst_buf;
      prng_t    prng_state;
  } info_t;
  
  static const pixman_op_t operators[] = 
  {
      PIXMAN_OP_SRC,
      PIXMAN_OP_OVER,
      PIXMAN_OP_ADD,
      PIXMAN_OP_CLEAR,
      PIXMAN_OP_SRC,
      PIXMAN_OP_DST,
      PIXMAN_OP_OVER,
      PIXMAN_OP_OVER_REVERSE,
      PIXMAN_OP_IN,
      PIXMAN_OP_IN_REVERSE,
      PIXMAN_OP_OUT,
      PIXMAN_OP_OUT_REVERSE,
      PIXMAN_OP_ATOP,
      PIXMAN_OP_ATOP_REVERSE,
      PIXMAN_OP_XOR,
      PIXMAN_OP_ADD,
      PIXMAN_OP_MULTIPLY,
      PIXMAN_OP_SCREEN,
      PIXMAN_OP_OVERLAY,
      PIXMAN_OP_DARKEN,
      PIXMAN_OP_LIGHTEN,
      PIXMAN_OP_HARD_LIGHT,
      PIXMAN_OP_DIFFERENCE,
      PIXMAN_OP_EXCLUSION,
  };
  
  static const pixman_format_code_t formats[] =
  {
      PIXMAN_a8r8g8b8,
      PIXMAN_r5g6b5,
      PIXMAN_a8,
      PIXMAN_a4,
      PIXMAN_a1,
      PIXMAN_b5g6r5,
      PIXMAN_r8g8b8a8,
      PIXMAN_a4r4g4b4
  };
  
  #define N_ROUNDS 8192
  
  #define RAND_ELT(arr)							\
      arr[prng_rand_r(&info->prng_state) % ARRAY_LENGTH (arr)]
  
  #define DEST_WIDTH (7)
  
  static void *
  thread (void *data)
  {
      info_t *info = data;
      uint32_t crc32 = 0x0;
      uint32_t src_buf[64];
      pixman_image_t *dst_img, *src_img;
      int i;
  
      prng_srand_r (&info->prng_state, info->thread_no);
  
      for (i = 0; i < N_ROUNDS; ++i)
      {
  	pixman_op_t op;
  	int rand1, rand2;
  
  	prng_randmemset_r (&info->prng_state, info->dst_buf,
  			   DEST_WIDTH * sizeof (uint32_t), 0);
  	prng_randmemset_r (&info->prng_state, src_buf,
  			   sizeof (src_buf), 0);
  
  	src_img = pixman_image_create_bits (
  	    RAND_ELT (formats), 4, 4, src_buf, 16);
  	dst_img = pixman_image_create_bits (
  	    RAND_ELT (formats), DEST_WIDTH, 1, info->dst_buf,
  	    DEST_WIDTH * sizeof (uint32_t));
  
  	image_endian_swap (src_img);
  	image_endian_swap (dst_img);
  	
  	rand2 = prng_rand_r (&info->prng_state) % 4;
  	rand1 = prng_rand_r (&info->prng_state) % 4;
  	op = RAND_ELT (operators);
  
  	pixman_image_composite32 (
  	    op,
  	    src_img, NULL, dst_img,
  	    rand1, rand2, 0, 0, 0, 0, DEST_WIDTH, 1);
  
  	crc32 = compute_crc32_for_image (crc32, dst_img);
  
  	pixman_image_unref (src_img);
  	pixman_image_unref (dst_img);
      }
  
      return (void *)(uintptr_t)crc32;
  }
  
  static inline uint32_t
  byteswap32 (uint32_t x)
  {
      return ((x & ((uint32_t)0xFF << 24)) >> 24) |
             ((x & ((uint32_t)0xFF << 16)) >>  8) |
             ((x & ((uint32_t)0xFF <<  8)) <<  8) |
             ((x & ((uint32_t)0xFF <<  0)) << 24);
  }
  
  int
  main (void)
  {
      uint32_t dest[16 * DEST_WIDTH];
      info_t info[16] = { { 0 } };
      pthread_t threads[16];
      void *retvals[16];
      uint32_t crc32s[16], crc32;
      int i;
  
      for (i = 0; i < 16; ++i)
      {
  	info[i].thread_no = i;
  	info[i].dst_buf = &dest[i * DEST_WIDTH];
      }
  
      for (i = 0; i < 16; ++i)
  	pthread_create (&threads[i], NULL, thread, &info[i]);
  
      for (i = 0; i < 16; ++i)
  	pthread_join (threads[i], &retvals[i]);
  
      for (i = 0; i < 16; ++i)
      {
  	crc32s[i] = (uintptr_t)retvals[i];
  
  	if (is_little_endian())
  	    crc32s[i] = byteswap32 (crc32s[i]);
      }
  
      crc32 = compute_crc32 (0, crc32s, sizeof crc32s);
  
  #define EXPECTED 0x82C4D9FB
  
      if (crc32 != EXPECTED)
      {
  	printf ("thread-test failed. Got checksum 0x%08X, expected 0x%08X\n",
  		crc32, EXPECTED);
  	return 1;
      }
  
      return 0;
  }
  
  #endif