comparison: docs/src/features.md
docs/src/features.md
- changeset 993
- b642eca4b956
- parent 962
- cd418898af5c
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| 992:14ca894190fd | 993:b642eca4b956 |
|---|---|
| 88 | 88 |
| 89 A memory pool is providing an allocator implementation that automatically deallocates the memory upon its destruction. | 89 A memory pool is providing an allocator implementation that automatically deallocates the memory upon its destruction. |
| 90 It also allows you to register destructor functions for the allocated memory, which are automatically called before | 90 It also allows you to register destructor functions for the allocated memory, which are automatically called before |
| 91 the memory is deallocated. | 91 the memory is deallocated. |
| 92 Additionally, you may also register _independent_ destructor functions within a pool in case some external library | 92 Additionally, you may also register _independent_ destructor functions within a pool in case some external library |
| 93 allocated memory for you, which should be destroyed together with this pool. | 93 allocated memory for you, which should be freed together with this pool. |
| 94 | 94 |
| 95 Many UCX features support the use of an allocator. | 95 Many UCX features support the use of an allocator. |
| 96 The [strings](#string), for instance, provide several functions suffixed with `_a` that allow specifying an allocator. | 96 The [strings](#string), for instance, provide several functions suffixed with `_a` that allow specifying an allocator. |
| 97 You can use this to keep track of the memory occupied by dynamically allocated strings and cleanup everything with | 97 You can use this to keep track of the memory occupied by dynamically allocated strings and cleanup everything with |
| 98 just a single call to `cxMempoolDestroy()`. | 98 just a single call to `cxMempoolFree()`. |
| 99 | 99 |
| 100 The following code illustrates this on the example of reading a CSV file into memory. | 100 The following code illustrates this on the example of reading a CSV file into memory. |
| 101 ```C | 101 ```C |
| 102 #include <stdio.h> | 102 #include <stdio.h> |
| 103 #include <cx/mempool.h> | 103 #include <cx/mempool.h> |
| 143 if (lines[i].length == 0) continue; | 143 if (lines[i].length == 0) continue; |
| 144 cxstring fields[3]; | 144 cxstring fields[3]; |
| 145 size_t fc = cx_strsplit(lines[i], CX_STR(";"), 3, fields); | 145 size_t fc = cx_strsplit(lines[i], CX_STR(";"), 3, fields); |
| 146 if (fc != 3) { | 146 if (fc != 3) { |
| 147 fprintf(stderr, "Syntax error in line %zu.\n", i); | 147 fprintf(stderr, "Syntax error in line %zu.\n", i); |
| 148 cxMempoolDestroy(pool); | 148 cxMempoolFree(pool); |
| 149 return 1; | 149 return 1; |
| 150 } | 150 } |
| 151 CSVData data; | 151 CSVData data; |
| 152 data.column_a = fields[0]; | 152 data.column_a = fields[0]; |
| 153 data.column_b = fields[1]; | 153 data.column_b = fields[1]; |
| 166 (int)data->column_c.length, data->column_c.ptr | 166 (int)data->column_c.length, data->column_c.ptr |
| 167 ); | 167 ); |
| 168 } | 168 } |
| 169 | 169 |
| 170 // cleanup everything, no manual free() needed | 170 // cleanup everything, no manual free() needed |
| 171 cxMempoolDestroy(pool); | 171 cxMempoolFree(pool); |
| 172 | 172 |
| 173 return 0; | 173 return 0; |
| 174 } | 174 } |
| 175 ``` | 175 ``` |
| 176 | 176 |
