=> 0x7f4d0cc7c954 <g_rec_mutex_lock+4>:	mov    (%rdi),%rax
   0x7f4d0cc7c957 <g_rec_mutex_lock+7>:	test   %rax,%rax
   0x7f4d0cc7c95a <g_rec_mutex_lock+10>:	je     0x7f4d0cc7c970 <g_rec_mutex_lock+32>
   0x7f4d0cc7c95c <g_rec_mutex_lock+12>:	mov    %rax,%rdi
   0x7f4d0cc7c95f <g_rec_mutex_lock+15>:	add    $0x8,%rsp
   0x7f4d0cc7c963 <g_rec_mutex_lock+19>:	jmpq   0x7f4d0cc12970 <pthread_mutex_lock@plt>
   0x7f4d0cc7c968 <g_rec_mutex_lock+24>:	nopl   0x0(%rax,%rax,1)
   0x7f4d0cc7c970 <g_rec_mutex_lock+32>:	callq  0x7f4d0cc13423
   0x7f4d0cc7c975 <g_rec_mutex_lock+37>:	add    $0x8,%rsp
   0x7f4d0cc7c979 <g_rec_mutex_lock+41>:	mov    %rax,%rdi
   0x7f4d0cc7c97c <g_rec_mutex_lock+44>:	jmpq   0x7f4d0cc12970 <pthread_mutex_lock@plt>
   0x7f4d0cc7c981:	data32 data32 data32 data32 data32 nopw %cs:0x0(%rax,%rax,1)
   0x7f4d0cc7c990 <g_rec_mutex_unlock>:	mov    (%rdi),%rdi
   0x7f4d0cc7c993 <g_rec_mutex_unlock+3>:	jmpq   0x7f4d0cc12450 <pthread_mutex_unlock@plt>
   0x7f4d0cc7c998:	nopl   0x0(%rax,%rax,1)
   0x7f4d0cc7c9a0 <g_rec_mutex_trylock>:	sub    $0x8,%rsp