Lines Matching defs:state
51 typedef void (*round_trip_t)(state_t* state);
60 state_t state;
62 state.seed = seed;
64 state.data.buf = (char const*)data;
65 state.data.size = size;
66 state.data.pos = 0;
69 state.compressed = cursor_create(1024 + 2 * LZ4_compressBound(size));
70 state.roundTrip = cursor_create(size);
72 state.cstream = LZ4_createStream();
73 FUZZ_ASSERT(state.cstream);
74 state.cstreamHC = LZ4_createStreamHC();
75 FUZZ_ASSERT(state.cstream);
76 state.dstream = LZ4_createStreamDecode();
77 FUZZ_ASSERT(state.dstream);
79 return state;
82 void state_free(state_t state)
84 cursor_free(state.compressed);
85 cursor_free(state.roundTrip);
86 LZ4_freeStream(state.cstream);
87 LZ4_freeStreamHC(state.cstreamHC);
88 LZ4_freeStreamDecode(state.dstream);
91 static void state_reset(state_t* state, uint32_t seed)
93 state->level = FUZZ_rand32(&seed, LZ4HC_CLEVEL_MIN, LZ4HC_CLEVEL_MAX);
94 LZ4_resetStream_fast(state->cstream);
95 LZ4_resetStreamHC_fast(state->cstreamHC, state->level);
96 LZ4_setStreamDecode(state->dstream, NULL, 0);
97 state->data.pos = 0;
98 state->compressed.pos = 0;
99 state->roundTrip.pos = 0;
100 state->seed = seed;
103 static void state_decompress(state_t* state, char const* src, int srcSize)
105 char* dst = state->roundTrip.buf + state->roundTrip.pos;
106 int const dstCapacity = state->roundTrip.size - state->roundTrip.pos;
107 int const dSize = LZ4_decompress_safe_continue(state->dstream, src, dst,
110 state->roundTrip.pos += dSize;
113 static void state_checkRoundTrip(state_t const* state)
115 char const* data = state->data.buf;
116 size_t const size = state->data.size;
117 FUZZ_ASSERT_MSG(size == state->roundTrip.pos, "Incorrect size!");
118 FUZZ_ASSERT_MSG(!memcmp(data, state->roundTrip.buf, size), "Corruption!");
125 static size_t state_trimDict(state_t* state)
128 uint32_t maxDictSize = MIN(70 * 1024, state->data.size);
129 size_t const dictSize = FUZZ_rand32(&state->seed, 0, maxDictSize);
131 FUZZ_ASSERT(state->data.pos == 0);
132 FUZZ_ASSERT(state->roundTrip.pos == 0);
133 memcpy(state->roundTrip.buf, state->data.buf, dictSize);
134 state->data.pos += dictSize;
135 state->roundTrip.pos += dictSize;
139 static void state_prefixRoundTrip(state_t* state)
141 while (state->data.pos != state->data.size) {
142 char const* src = state->data.buf + state->data.pos;
143 char* dst = state->compressed.buf + state->compressed.pos;
144 int const srcRemaining = state->data.size - state->data.pos;
145 int const srcSize = FUZZ_rand32(&state->seed, 0, srcRemaining);
146 int const dstCapacity = state->compressed.size - state->compressed.pos;
147 int const cSize = LZ4_compress_fast_continue(state->cstream, src, dst,
150 state->data.pos += srcSize;
151 state->compressed.pos += cSize;
152 state_decompress(state, dst, cSize);
156 static void state_extDictRoundTrip(state_t* state)
159 cursor_t data2 = cursor_create(state->data.size);
160 memcpy(data2.buf, state->data.buf, state->data.size);
161 while (state->data.pos != state->data.size) {
162 char const* data = (i++ & 1) ? state->data.buf : data2.buf;
163 char const* src = data + state->data.pos;
164 char* dst = state->compressed.buf + state->compressed.pos;
165 int const srcRemaining = state->data.size - state->data.pos;
166 int const srcSize = FUZZ_rand32(&state->seed, 0, srcRemaining);
167 int const dstCapacity = state->compressed.size - state->compressed.pos;
168 int const cSize = LZ4_compress_fast_continue(state->cstream, src, dst,
171 state->data.pos += srcSize;
172 state->compressed.pos += cSize;
173 state_decompress(state, dst, cSize);
178 static void state_randomRoundTrip(state_t* state, round_trip_t rt0,
181 if (FUZZ_rand32(&state->seed, 0, 1)) {
182 rt0(state);
184 rt1(state);
188 static void state_loadDictRoundTrip(state_t* state)
190 char const* dict = state->data.buf;
191 size_t const dictSize = state_trimDict(state);
192 LZ4_loadDict(state->cstream, dict, dictSize);
193 LZ4_setStreamDecode(state->dstream, dict, dictSize);
194 state_randomRoundTrip(state, state_prefixRoundTrip, state_extDictRoundTrip);
197 static void state_attachDictRoundTrip(state_t* state)
199 char const* dict = state->data.buf;
200 size_t const dictSize = state_trimDict(state);
203 LZ4_attach_dictionary(state->cstream, dictStream);
204 LZ4_setStreamDecode(state->dstream, dict, dictSize);
205 state_randomRoundTrip(state, state_prefixRoundTrip, state_extDictRoundTrip);
209 static void state_prefixHCRoundTrip(state_t* state)
211 while (state->data.pos != state->data.size) {
212 char const* src = state->data.buf + state->data.pos;
213 char* dst = state->compressed.buf + state->compressed.pos;
214 int const srcRemaining = state->data.size - state->data.pos;
215 int const srcSize = FUZZ_rand32(&state->seed, 0, srcRemaining);
216 int const dstCapacity = state->compressed.size - state->compressed.pos;
217 int const cSize = LZ4_compress_HC_continue(state->cstreamHC, src, dst,
220 state->data.pos += srcSize;
221 state->compressed.pos += cSize;
222 state_decompress(state, dst, cSize);
226 static void state_extDictHCRoundTrip(state_t* state)
229 cursor_t data2 = cursor_create(state->data.size);
231 memcpy(data2.buf, state->data.buf, state->data.size);
232 while (state->data.pos != state->data.size) {
233 char const* data = (i++ & 1) ? state->data.buf : data2.buf;
234 char const* src = data + state->data.pos;
235 char* dst = state->compressed.buf + state->compressed.pos;
236 int const srcRemaining = state->data.size - state->data.pos;
237 int const srcSize = FUZZ_rand32(&state->seed, 0, srcRemaining);
238 int const dstCapacity = state->compressed.size - state->compressed.pos;
239 int const cSize = LZ4_compress_HC_continue(state->cstreamHC, src, dst,
243 state->data.pos += srcSize;
244 state->compressed.pos += cSize;
245 state_decompress(state, dst, cSize);
250 static void state_loadDictHCRoundTrip(state_t* state)
252 char const* dict = state->data.buf;
253 size_t const dictSize = state_trimDict(state);
254 LZ4_loadDictHC(state->cstreamHC, dict, dictSize);
255 LZ4_setStreamDecode(state->dstream, dict, dictSize);
256 state_randomRoundTrip(state, state_prefixHCRoundTrip,
260 static void state_attachDictHCRoundTrip(state_t* state)
262 char const* dict = state->data.buf;
263 size_t const dictSize = state_trimDict(state);
265 LZ4_setCompressionLevel(dictStream, state->level);
267 LZ4_attach_HC_dictionary(state->cstreamHC, dictStream);
268 LZ4_setStreamDecode(state->dstream, dict, dictSize);
269 state_randomRoundTrip(state, state_prefixHCRoundTrip,
288 state_t state = state_create((char const*)data, size, seed);
294 state_reset(&state, seed);
295 roundTrips[i](&state);
296 state_checkRoundTrip(&state);
299 state_free(state);