ea174c0934
Summary: Currently we rely on global constructors to initialize and shut down the OpenMP runtime library and plugin manager. This causes some issues because we do not have a defined lifetime that we can rely on to release and allocate resources. This patch instead adds some simple reference counted initialization and deinitialization function. A future patch will use the `deinit` interface to more intelligently handle plugin deinitilization. Right now we do nothing and rely on `atexit` inside of the plugins to tear them down. This isn't great because it limits our ability to control these things. Note that I made the `__tgt_register_lib` functions do the initialization instead of adding calls to the new runtime functions in the linker wrapper. The reason for this is because in the past it's been easier to not introduce a new function call, since sometimes the user's compiler will link against an older `libomptarget`. Maybe if we change the name with offloading in the future we can simplify this. Depends on https://github.com/llvm/llvm-project/pull/80460
31 lines
636 B
C
31 lines
636 B
C
// RUN: %libomptarget-compile-generic
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// RUN: env LIBOMPTARGET_DEBUG=1 %libomptarget-run-generic 2>&1 \
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// RUN: %fcheck-generic
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// REQUIRES: libomptarget-debug
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#include <omp.h>
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#include <stdio.h>
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extern void __tgt_rtl_init(void);
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extern void __tgt_rtl_deinit(void);
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// Sanity checks to make sure that this works and is thread safe.
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int main() {
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// CHECK: Init offload library!
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// CHECK: Deinit offload library!
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__tgt_rtl_init();
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#pragma omp parallel num_threads(8)
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{
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__tgt_rtl_init();
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__tgt_rtl_deinit();
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}
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__tgt_rtl_deinit();
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__tgt_rtl_init();
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__tgt_rtl_deinit();
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// CHECK: PASS
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printf("PASS\n");
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}
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