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[lwip-devel] [bug #50838] mem.c needs SYS_ARCH_PROTECTION around MEM_STA

From: Daniel Elstner
Subject: [lwip-devel] [bug #50838] mem.c needs SYS_ARCH_PROTECTION around MEM_STATS
Date: Fri, 21 Apr 2017 16:03:53 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/57.0.2987.98 Chrome/57.0.2987.98 Safari/537.36

Follow-up Comment #3, bug #50838 (project lwip):

Seems like this fix broke stats counting. STATS_INC_USED is defined as thus:

#define STATS_INC_USED(x, y) do { lwip_stats.x.used += y; \
                                if (lwip_stats.x.max < lwip_stats.x.used) { \
                                    lwip_stats.x.max = lwip_stats.x.used; \
                                } \
                             } while(0)

The commit replaces this with:

#define MEM_STATS_INC_USED(x, y) SYS_ARCH_INC(lwip_stats.mem.x, y)

Which is clearly not the same thing, and explains why my memory usage is shown
as zero.


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