1889 }
1890 jio_fprintf(defaultStream::error_stream(),
1891 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n",
1892 name, value);
1893 return false;
1894 }
1895
1896 #if !INCLUDE_ALL_GCS
1897 #ifdef ASSERT
1898 static bool verify_serial_gc_flags() {
1899 return (UseSerialGC &&
1900 !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC ||
1901 UseParallelGC || UseParallelOldGC));
1902 }
1903 #endif // ASSERT
1904 #endif // INCLUDE_ALL_GCS
1905
1906 // check if do gclog rotation
1907 // +UseGCLogFileRotation is a must,
1908 // no gc log rotation when log file not supplied or
1909 // NumberOfGCLogFiles is 0, or GCLogFileSize is 0
1910 void check_gclog_consistency() {
1911 if (UseGCLogFileRotation) {
1912 if ((Arguments::gc_log_filename() == NULL) ||
1913 (NumberOfGCLogFiles == 0) ||
1914 (GCLogFileSize == 0)) {
1915 jio_fprintf(defaultStream::output_stream(),
1916 "To enable GC log rotation, use -Xloggc:<filename> -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=<num_of_files> -XX:GCLogFileSize=<num_of_size>[k|K|m|M|g|G]\n"
1917 "where num_of_file > 0 and num_of_size > 0\n"
1918 "GC log rotation is turned off\n");
1919 UseGCLogFileRotation = false;
1920 }
1921 }
1922
1923 if (UseGCLogFileRotation && GCLogFileSize < 8*K) {
1924 FLAG_SET_CMDLINE(uintx, GCLogFileSize, 8*K);
1925 jio_fprintf(defaultStream::output_stream(),
1926 "GCLogFileSize changed to minimum 8K\n");
1927 }
1928 }
1929
1930 // This function is called for -Xloggc:<filename>, it can be used
1931 // to check if a given file name(or string) conforms to the following
1932 // specification:
1933 // A valid string only contains "[A-Z][a-z][0-9].-_%[p|t]"
1934 // %p and %t only allowed once. We only limit usage of filename not path
1935 bool is_filename_valid(const char *file_name) {
1936 const char* p = file_name;
1937 char file_sep = os::file_separator()[0];
1938 const char* cp;
1939 // skip prefix path
1940 for (cp = file_name; *cp != '\0'; cp++) {
1941 if (*cp == '/' || *cp == file_sep) {
1942 p = cp + 1;
1943 }
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1889 }
1890 jio_fprintf(defaultStream::error_stream(),
1891 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n",
1892 name, value);
1893 return false;
1894 }
1895
1896 #if !INCLUDE_ALL_GCS
1897 #ifdef ASSERT
1898 static bool verify_serial_gc_flags() {
1899 return (UseSerialGC &&
1900 !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC ||
1901 UseParallelGC || UseParallelOldGC));
1902 }
1903 #endif // ASSERT
1904 #endif // INCLUDE_ALL_GCS
1905
1906 // check if do gclog rotation
1907 // +UseGCLogFileRotation is a must,
1908 // no gc log rotation when log file not supplied or
1909 // NumberOfGCLogFiles is 0
1910 void check_gclog_consistency() {
1911 if (UseGCLogFileRotation) {
1912 if ((Arguments::gc_log_filename() == NULL) || (NumberOfGCLogFiles == 0)) {
1913 jio_fprintf(defaultStream::output_stream(),
1914 "To enable GC log rotation, use -Xloggc:<filename> -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=<num_of_files>\n"
1915 "where num_of_file > 0\n"
1916 "GC log rotation is turned off\n");
1917 UseGCLogFileRotation = false;
1918 }
1919 }
1920
1921 if (UseGCLogFileRotation && (GCLogFileSize != 0) && (GCLogFileSize < 8*K)) {
1922 FLAG_SET_CMDLINE(uintx, GCLogFileSize, 8*K);
1923 jio_fprintf(defaultStream::output_stream(),
1924 "GCLogFileSize changed to minimum 8K\n");
1925 }
1926 }
1927
1928 // This function is called for -Xloggc:<filename>, it can be used
1929 // to check if a given file name(or string) conforms to the following
1930 // specification:
1931 // A valid string only contains "[A-Z][a-z][0-9].-_%[p|t]"
1932 // %p and %t only allowed once. We only limit usage of filename not path
1933 bool is_filename_valid(const char *file_name) {
1934 const char* p = file_name;
1935 char file_sep = os::file_separator()[0];
1936 const char* cp;
1937 // skip prefix path
1938 for (cp = file_name; *cp != '\0'; cp++) {
1939 if (*cp == '/' || *cp == file_sep) {
1940 p = cp + 1;
1941 }
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