is a C library for encoding, decoding and manipulating JSON data.
| portability.rst (jansson-2.13.1.tar.bz2) | : | portability.rst (jansson-2.14.tar.bz2) |
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| *********** | | .. _thread-safety: |
| Portability | | |
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| .. _portability-thread-safety: | | |
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| Thread safety | | Thread safety |
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| Jansson as a library is thread safe and has no mutable global state. | | Jansson as a library is thread safe and has no mutable global state. |
| The only exceptions are the hash function seed and memory allocation | | The only exceptions are the hash function seed and memory allocation |
| functions, see below. | | functions, see below. |
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| There's no locking performed inside Jansson's code. **Read-only** | | There's no locking performed inside Jansson's code. **Read-only** |
| access to JSON values shared by multiple threads is safe, but | | access to JSON values shared by multiple threads is safe, but |
| **mutating** a JSON value that's shared by multiple threads is not. A | | **mutating** a JSON value that's shared by multiple threads is not. A |
| multithreaded program must perform its own locking if JSON values | | multithreaded program must perform its own locking if JSON values |
| shared by multiple threads are mutated. | | shared by multiple threads are mutated. |
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| skipping to change at line 64 | | skipping to change at line 61 |
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| ``json_object_seed(0)`` , especially if you're unsure whether the | | ``json_object_seed(0)`` , especially if you're unsure whether the |
| initialization is thread safe on your platform. | | initialization is thread safe on your platform. |
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| Memory allocation functions | | Memory allocation functions |
| =========================== | | =========================== |
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| Memory allocation functions should be set at most once, and only on | | Memory allocation functions should be set at most once, and only on |
| program startup. See :ref:`apiref-custom-memory-allocation`. | | program startup. See :ref:`apiref-custom-memory-allocation`. |
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| Locale | | Locale |
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| | ====== |
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| Jansson works fine under any locale. | | Jansson works fine under any locale. |
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| However, if the host program is multithreaded and uses ``setlocale()`` | | However, if the host program is multithreaded and uses ``setlocale()`` |
| to switch the locale in one thread while Jansson is currently encoding | | to switch the locale in one thread while Jansson is currently encoding |
| or decoding JSON data in another thread, the result may be wrong or | | or decoding JSON data in another thread, the result may be wrong or |
| the program may even crash. | | the program may even crash. |
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| Jansson uses locale specific functions for certain string conversions | | Jansson uses locale specific functions for certain string conversions |
| in the encoder and decoder, and then converts the locale specific | | in the encoder and decoder, and then converts the locale specific |
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| End of changes. 4 change blocks. |
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| 5 lines changed or deleted | | 4 lines changed or added |
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