ADTaaron-thesisarm-ehast-experimentalcleanup-dtorsdeferred_resndemanglerenumforall-pointer-decayjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprnew-envno_listpersistent-indexerpthread-emulationqualifiedEnumresolv-newwith_gc
Last change
on this file since f4a6101 was
728df66,
checked in by Peter A. Buhr <pabuhr@…>, 7 years ago
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more documentation name changes
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-
Property mode set to
100644
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File size:
1.1 KB
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Line | |
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1 | struct memory_pool { |
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2 | char * start; |
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3 | char * cur; |
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4 | size_t size; |
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5 | char * free; |
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6 | }; |
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7 | |
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8 | void ?{}(memory_pool * pool, size_t size) { |
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9 | pool->[start, cur] = malloc(size); |
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10 | pool->size = size; |
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11 | printf("initializing memory pool with size %lu at location %p\n", pool->size, pool->start); |
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12 | } |
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13 | |
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14 | void ^?{}(memory_pool * pool) { |
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15 | free(pool->start); |
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16 | } |
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17 | |
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18 | forall(dtype T | sized(T)) |
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19 | T * allocate(memory_pool * pool, unsigned int array_size = 1) { |
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20 | size_t size = sizeof(T) * array_size; |
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21 | printf("allocating block of size %lu...", size); |
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22 | if (pool->cur + size < pool->start + pool->size) { |
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23 | T * x = (T*)pool->cur; |
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24 | pool->cur += size; |
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25 | printf("success!\n"); |
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26 | printf("next address is %p\n", pool->cur); |
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27 | return x; |
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28 | } else { |
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29 | printf("failed!\n"); |
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30 | // fail to allocate |
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31 | return 0; |
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32 | } |
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33 | } |
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34 | |
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35 | struct A { |
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36 | int x, y, z; |
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37 | }; |
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38 | void ?{}(A * a) { |
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39 | a->[x,y,z] = [123, 456, 789]; |
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40 | } |
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41 | |
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42 | int main() { |
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43 | memory_pool pool = { 1024 }; |
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44 | |
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45 | int * x = allocate(&pool); |
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46 | A * a = allocate(&pool); |
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47 | A * b = allocate(&pool, 1000); |
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48 | a{}; |
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49 | printf("%p\n", x); |
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50 | printf("%p %d %d %d\n", a, a->[x,y,z]); |
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51 | } |
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