| .. _module-pw_sync_baremetal: |
| |
| ================= |
| pw_sync_baremetal |
| ================= |
| This is a set of backends for pw_sync that works on baremetal targets. It is not |
| ready for use, and is under construction. |
| |
| .. note:: |
| All constructs in this baremetal backend do not support hardware |
| multi-threading (SMP, SMT, etc). |
| |
| .. warning:: |
| It does not perform interrupt masking or disable global interrupts. This is |
| not safe to use yet! |
| |
| ----------------- |
| InterruptSpinLock |
| ----------------- |
| The interrupt spin-lock implementation makes a single attempt to acquire the |
| lock and asserts if it is unavailable. It does not perform interrupt masking or |
| disable global interrupts. |
| |
| ----- |
| Mutex |
| ----- |
| The mutex implementation makes a single attempt to acquire the lock and asserts |
| if it is unavailable. |
| |
| -------------- |
| RecursiveMutex |
| -------------- |
| The recursive mutex implementation counts the number of lock and unlock calls |
| and asserts if the mutex is unlocked too many times or destroyed while locked. |
| Note that recursive mutexes are not available for general use in Pigweed. |
