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8042431: compiler/7200264/TestIntVect.java fails with: Test Failed: AddVI 0 < 4

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Define a new function that determines the minimum number of compiler threads for a particular platform/configuration.

Reviewed-by: kvn
This commit is contained in:
Albert Noll 2014-05-08 12:49:21 +02:00
parent 6e6f0720a9
commit ae28b717f4
2 changed files with 32 additions and 3 deletions
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34
hotspot/src/share/vm/runtime/arguments.cpp
View File

@ -1151,6 +1151,32 @@ void Arguments::set_tiered_flags() {
}
}
/**
* Returns the minimum number of compiler threads needed to run the JVM. The following
* configurations are possible.
*
* 1) The JVM is build using an interpreter only. As a result, the minimum number of
* compiler threads is 0.
* 2) The JVM is build using the compiler(s) and tiered compilation is disabled. As
* a result, either C1 or C2 is used, so the minimum number of compiler threads is 1.
* 3) The JVM is build using the compiler(s) and tiered compilation is enabled. However,
* the option "TieredStopAtLevel < CompLevel_full_optimization". As a result, only
* C1 can be used, so the minimum number of compiler threads is 1.
* 4) The JVM is build using the compilers and tiered compilation is enabled. The option
* 'TieredStopAtLevel = CompLevel_full_optimization' (the default value). As a result,
* the minimum number of compiler threads is 2.
*/
int Arguments::get_min_number_of_compiler_threads() {
#if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK)
return 0; // case 1
#else
if (!TieredCompilation || (TieredStopAtLevel < CompLevel_full_optimization)) {
return 1; // case 2 or case 3
}
return 2; // case 4 (tiered)
#endif
}
#if INCLUDE_ALL_GCS
static void disable_adaptive_size_policy(const char* collector_name) {
if (UseAdaptiveSizePolicy) {
@ -2398,9 +2424,11 @@ bool Arguments::check_vm_args_consistency() {
status &= verify_interval(CodeCacheMinBlockLength, 1, 100, "CodeCacheMinBlockLength");
status &= verify_interval(CodeCacheSegmentSize, 1, 1024, "CodeCacheSegmentSize");
// TieredCompilation needs at least 2 compiler threads.
const int num_min_compiler_threads = (TieredCompilation && (TieredStopAtLevel >= CompLevel_full_optimization)) ? 2 : CI_COMPILER_COUNT;
status &=verify_min_value(CICompilerCount, num_min_compiler_threads, "CICompilerCount");
int min_number_of_compiler_threads = get_min_number_of_compiler_threads();
// The default CICompilerCount's value is CI_COMPILER_COUNT.
assert(min_number_of_compiler_threads <= CI_COMPILER_COUNT, "minimum should be less or equal default number");
// Check the minimum number of compiler threads
status &=verify_min_value(CICompilerCount, min_number_of_compiler_threads, "CICompilerCount");
if (!FLAG_IS_DEFAULT(CICompilerCount) && !FLAG_IS_DEFAULT(CICompilerCountPerCPU) && CICompilerCountPerCPU) {
warning("The VM option CICompilerCountPerCPU overrides CICompilerCount.");

1
hotspot/src/share/vm/runtime/arguments.hpp
View File

@ -323,6 +323,7 @@ class Arguments : AllStatic {
// Tiered
static void set_tiered_flags();
static int get_min_number_of_compiler_threads();
// CMS/ParNew garbage collectors
static void set_parnew_gc_flags();
static void set_cms_and_parnew_gc_flags();