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Make SYS_LIGHTWEIGHT_PROT==1 the default since it's more often used like that and it's more safe as default; improved some option's comments

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sg 2016-07-21 22:10:02 +02:00
parent f98c3dd4b5
commit 6e6ce4fb78
1 changed files with 20 additions and 11 deletions
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31
src/include/lwip/opt.h
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@ -52,17 +52,21 @@
*/
/**
* SYS_LIGHTWEIGHT_PROT==1: if you want inter-task protection for certain
* critical regions during buffer allocation, deallocation and memory
* allocation and deallocation.
* SYS_LIGHTWEIGHT_PROT==1: enable inter-task protection (and task-vs-interrupt
* protection) for certain critical regions during buffer allocation, deallocation
* and memory allocation and deallocation.
* ATTENTION: This is required when using lwIP from more than one context! If
* you disable this, you must be sure what you are doing!
*/
#ifndef SYS_LIGHTWEIGHT_PROT
#define SYS_LIGHTWEIGHT_PROT 0
#define SYS_LIGHTWEIGHT_PROT 1
#endif
/**
* NO_SYS==1: Provides VERY minimal functionality. Otherwise,
* use lwIP facilities.
* NO_SYS==1: Use lwIP without OS-awareness (no thread, semaphores, mutexes or
* mboxes). This means threaded APIs cannot be used (socket, netconn,
* i.e. everything in the 'api' folder), only the callback-style raw API is
* available (and you have to watch out for yourself that
*/
#ifndef NO_SYS
#define NO_SYS 0
@ -96,7 +100,8 @@
* LWIP_MPU_COMPATIBLE: enables special memory management mechanism
* which makes lwip able to work on MPU (Memory Protection Unit) system
* by not passing stack-pointers to other threads
* (this decreases performance)
* (this decreases performance as memory is allocated from pools instead
* of keeping it on the stack)
*/
#ifndef LWIP_MPU_COMPATIBLE
#define LWIP_MPU_COMPATIBLE 0
@ -117,10 +122,14 @@
#endif
/**
* MEMP_MEM_MALLOC==1: Use mem_malloc/mem_free instead of the lwip pool allocator.
* Especially useful with MEM_LIBC_MALLOC but handle with care regarding execution
* speed and usage from interrupts!
*/
* MEMP_MEM_MALLOC==1: Use mem_malloc/mem_free instead of the lwip pool allocator.
* Especially useful with MEM_LIBC_MALLOC but handle with care regarding execution
* speed (heap alloc can be much slower than pool alloc) and usage from interrupts
* (especially if your netif driver allocates PBUF_POOL pbufs for received frames
* from interrupt)!
* ATTENTION: Currently, this uses the heap for ALL pools (also for private pools,
* not only for internal pools defined in memp_std.h)!
*/
#ifndef MEMP_MEM_MALLOC
#define MEMP_MEM_MALLOC 0
#endif