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https://github.com/plasma-umass/coz.git
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Handle NULL return value from dlopen
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parent
2ffc5b2798
commit
44d46432c4
7
coz
7
coz
@ -106,6 +106,9 @@ def _coz_run(args):
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if args.fixed_speedup != None:
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env['COZ_FIXED_SPEEDUP'] = str(args.fixed_speedup)
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if args.debug_libraries:
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env['LD_DEBUG'] = 'libs'
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try:
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result = subprocess.call(args.remaining_args, env=env)
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except KeyboardInterrupt:
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@ -185,6 +188,10 @@ _run_parser.add_argument('--fixed-speedup',
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type=int, choices=list(range(0, 101)), default=None,
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help='Evaluate optimizations of a specific amount')
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_run_parser.add_argument('--debug-libraries',
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action='store_true', default=False,
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help='Debug shared libraries (LD_DEBUG=libs)')
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# Use defaults to recover handler function and parser object from parser output
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_run_parser.set_defaults(func=_coz_run, parser=_run_parser)
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@ -6,6 +6,7 @@
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*/
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#include "real.h"
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#include "ccutil/log.h"
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#include <dlfcn.h>
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@ -37,6 +38,7 @@ static void* pthread_handle = NULL; //< The `dlopen` handle to libpthread
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static void* get_pthread_handle() {
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if(pthread_handle == NULL && !__atomic_exchange_n(&in_dlopen, true, __ATOMIC_ACQ_REL)) {
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pthread_handle = dlopen("libpthread.so.0", RTLD_NOW | RTLD_GLOBAL);
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REQUIRE(pthread_handle != NULL) << dlerror();
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__atomic_store_n(&in_dlopen, false, __ATOMIC_RELEASE);
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}
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