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core_samples

Collect core dump for Segmentation fault .

set core_pattern

echo ‘/var/log/%e.core.%p’ > /proc/sys/kernel/core_pattern

or

std::string cmd = "sysctl -w kernel.core_pattern=/home/li/log/%e.core.%p.
%t";
system(cmd.c_str());

set core limit

ulimit -c 1024

or

struct rlimit rlim;
getrlimit(RLIMIT_CORE,&rlim);
printf("cur:%lu, max:%lu \n",rlim.rlim_cur,rlim.rlim_max);

rlim.rlim_cur = 100 * 1024 * 1024;
rlim.rlim_max = 100 * 1024 * 1024;
setrlimit(RLIMIT_CORE,&rlim);

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