41 }
42 }
43
44 /**
45 * Validate the minimum number of compiler threads needed to run the
46 * JVM. The following configurations are possible.
47 *
48 * 1) The JVM is build using an interpreter only. As a result, the minimum number of
49 * compiler threads is 0.
50 * 2) The JVM is build using the compiler(s) and tiered compilation is disabled. As
51 * a result, either C1 or C2 is used, so the minimum number of compiler threads is 1.
52 * 3) The JVM is build using the compiler(s) and tiered compilation is enabled. However,
53 * the option "TieredStopAtLevel < CompLevel_full_optimization". As a result, only
54 * C1 can be used, so the minimum number of compiler threads is 1.
55 * 4) The JVM is build using the compilers and tiered compilation is enabled. The option
56 * 'TieredStopAtLevel = CompLevel_full_optimization' (the default value). As a result,
57 * the minimum number of compiler threads is 2.
58 */
59 Flag::Error CICompilerCountConstraintFunc(intx value, bool verbose) {
60 int min_number_of_compiler_threads = 0;
61 #if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK)
62 // case 1
63 #else
64 if (!TieredCompilation || (TieredStopAtLevel < CompLevel_full_optimization)) {
65 min_number_of_compiler_threads = 1; // case 2 or case 3
66 } else {
67 min_number_of_compiler_threads = 2; // case 4 (tiered)
68 }
69 #endif
70
71 // The default CICompilerCount's value is CI_COMPILER_COUNT.
72 // With a client VM, -XX:+TieredCompilation causes TieredCompilation
73 // to be true here (the option is validated later) and
74 // min_number_of_compiler_threads to exceed CI_COMPILER_COUNT.
75 min_number_of_compiler_threads = MIN2(min_number_of_compiler_threads, CI_COMPILER_COUNT);
76
77 if (value < (intx)min_number_of_compiler_threads) {
78 CommandLineError::print(verbose,
79 "CICompilerCount (" INTX_FORMAT ") must be "
80 "at least %d \n",
81 value, min_number_of_compiler_threads);
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41 }
42 }
43
44 /**
45 * Validate the minimum number of compiler threads needed to run the
46 * JVM. The following configurations are possible.
47 *
48 * 1) The JVM is build using an interpreter only. As a result, the minimum number of
49 * compiler threads is 0.
50 * 2) The JVM is build using the compiler(s) and tiered compilation is disabled. As
51 * a result, either C1 or C2 is used, so the minimum number of compiler threads is 1.
52 * 3) The JVM is build using the compiler(s) and tiered compilation is enabled. However,
53 * the option "TieredStopAtLevel < CompLevel_full_optimization". As a result, only
54 * C1 can be used, so the minimum number of compiler threads is 1.
55 * 4) The JVM is build using the compilers and tiered compilation is enabled. The option
56 * 'TieredStopAtLevel = CompLevel_full_optimization' (the default value). As a result,
57 * the minimum number of compiler threads is 2.
58 */
59 Flag::Error CICompilerCountConstraintFunc(intx value, bool verbose) {
60 int min_number_of_compiler_threads = 0;
61 #if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK) && !INCLUDE_JVMCI
62 // case 1
63 #else
64 if (!TieredCompilation || (TieredStopAtLevel < CompLevel_full_optimization)) {
65 min_number_of_compiler_threads = 1; // case 2 or case 3
66 } else {
67 min_number_of_compiler_threads = 2; // case 4 (tiered)
68 }
69 #endif
70
71 // The default CICompilerCount's value is CI_COMPILER_COUNT.
72 // With a client VM, -XX:+TieredCompilation causes TieredCompilation
73 // to be true here (the option is validated later) and
74 // min_number_of_compiler_threads to exceed CI_COMPILER_COUNT.
75 min_number_of_compiler_threads = MIN2(min_number_of_compiler_threads, CI_COMPILER_COUNT);
76
77 if (value < (intx)min_number_of_compiler_threads) {
78 CommandLineError::print(verbose,
79 "CICompilerCount (" INTX_FORMAT ") must be "
80 "at least %d \n",
81 value, min_number_of_compiler_threads);
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