diff options
Diffstat (limited to 'src/corelib/global/qrandom.cpp')
| -rw-r--r-- | src/corelib/global/qrandom.cpp | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/src/corelib/global/qrandom.cpp b/src/corelib/global/qrandom.cpp index 6cc46bcf39..2ee8f0dd01 100644 --- a/src/corelib/global/qrandom.cpp +++ b/src/corelib/global/qrandom.cpp @@ -91,7 +91,7 @@ DECLSPEC_IMPORT BOOLEAN WINAPI SystemFunction036(PVOID RandomBuffer, ULONG Rando QT_BEGIN_NAMESPACE #if defined(Q_PROCESSOR_X86) && QT_COMPILER_SUPPORTS_HERE(RDRND) -static qsizetype qt_random_cpu(void *buffer, qsizetype count) Q_DECL_NOTHROW; +static qsizetype qt_random_cpu(void *buffer, qsizetype count) noexcept; # ifdef Q_PROCESSOR_X86_64 # define _rdrandXX_step _rdrand64_step @@ -99,7 +99,7 @@ static qsizetype qt_random_cpu(void *buffer, qsizetype count) Q_DECL_NOTHROW; # define _rdrandXX_step _rdrand32_step # endif -static QT_FUNCTION_TARGET(RDRND) qsizetype qt_random_cpu(void *buffer, qsizetype count) Q_DECL_NOTHROW +static QT_FUNCTION_TARGET(RDRND) qsizetype qt_random_cpu(void *buffer, qsizetype count) noexcept { unsigned *ptr = reinterpret_cast<unsigned *>(buffer); unsigned *end = ptr + count; @@ -134,7 +134,7 @@ enum { struct QRandomGenerator::SystemGenerator { #if QT_CONFIG(getentropy) - static qsizetype fillBuffer(void *buffer, qsizetype count) Q_DECL_NOTHROW + static qsizetype fillBuffer(void *buffer, qsizetype count) noexcept { // getentropy can read at most 256 bytes, so break the reading qsizetype read = 0; @@ -204,13 +204,13 @@ struct QRandomGenerator::SystemGenerator } #elif defined(Q_OS_WIN) && !defined(Q_OS_WINRT) - qsizetype fillBuffer(void *buffer, qsizetype count) Q_DECL_NOTHROW + qsizetype fillBuffer(void *buffer, qsizetype count) noexcept { auto RtlGenRandom = SystemFunction036; return RtlGenRandom(buffer, ULONG(count)) ? count: 0; } #elif defined(Q_OS_WINRT) - qsizetype fillBuffer(void *, qsizetype) Q_DECL_NOTHROW + qsizetype fillBuffer(void *, qsizetype) noexcept { // always use the fallback return 0; @@ -242,7 +242,7 @@ struct QRandomGenerator::SystemGenerator #if defined(Q_OS_WIN) static void fallback_update_seed(unsigned) {} -static void fallback_fill(quint32 *ptr, qsizetype left) Q_DECL_NOTHROW +static void fallback_fill(quint32 *ptr, qsizetype left) noexcept { // on Windows, rand_s is a high-quality random number generator // and it requires no seeding @@ -254,14 +254,14 @@ static void fallback_fill(quint32 *ptr, qsizetype left) Q_DECL_NOTHROW } #elif QT_CONFIG(getentropy) static void fallback_update_seed(unsigned) {} -static void fallback_fill(quint32 *, qsizetype) Q_DECL_NOTHROW +static void fallback_fill(quint32 *, qsizetype) noexcept { // no fallback necessary, getentropy cannot fail under normal circumstances Q_UNREACHABLE(); } #elif defined(Q_OS_BSD4) && !defined(__GLIBC__) static void fallback_update_seed(unsigned) {} -static void fallback_fill(quint32 *ptr, qsizetype left) Q_DECL_NOTHROW +static void fallback_fill(quint32 *ptr, qsizetype left) noexcept { // BSDs have arc4random(4) and these work even in chroot(2) arc4random_buf(ptr, left * sizeof(*ptr)); @@ -280,7 +280,7 @@ Q_NEVER_INLINE #ifdef Q_CC_GNU __attribute__((cold)) // this function is pretty big, so optimize for size #endif -static void fallback_fill(quint32 *ptr, qsizetype left) Q_DECL_NOTHROW +static void fallback_fill(quint32 *ptr, qsizetype left) noexcept { quint32 scratch[12]; // see element count below quint32 *end = scratch; @@ -930,7 +930,7 @@ inline QRandomGenerator::SystemGenerator &QRandomGenerator::SystemGenerator::sel */ /*! - \fn quint32 QRandomGenerator::bounded(int highest) + \fn int QRandomGenerator::bounded(int highest) \overload Generates one random 32-bit quantity in the range between 0 (inclusive) and @@ -957,7 +957,6 @@ inline QRandomGenerator::SystemGenerator &QRandomGenerator::SystemGenerator::sel \snippet code/src_corelib_global_qrandom.cpp 14 - Note that this function cannot be used to obtain values in the full 32-bit range of quint32. Instead, use generate(). @@ -965,7 +964,7 @@ inline QRandomGenerator::SystemGenerator &QRandomGenerator::SystemGenerator::sel */ /*! - \fn quint32 QRandomGenerator::bounded(int lowest, int highest) + \fn int QRandomGenerator::bounded(int lowest, int highest) \overload Generates one random 32-bit quantity in the range between \a lowest @@ -1168,7 +1167,7 @@ QRandomGenerator &QRandomGenerator::operator=(const QRandomGenerator &other) return *this; } -QRandomGenerator::QRandomGenerator(std::seed_seq &sseq) Q_DECL_NOTHROW +QRandomGenerator::QRandomGenerator(std::seed_seq &sseq) noexcept : type(MersenneTwister) { Q_ASSERT(this != system()); |