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Diffstat (limited to 'src/addressmap-inl.h')
| -rw-r--r-- | src/addressmap-inl.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/addressmap-inl.h b/src/addressmap-inl.h index a8cbb77..e1ce1bf 100644 --- a/src/addressmap-inl.h +++ b/src/addressmap-inl.h @@ -91,6 +91,14 @@ #include <sys/types.h> // our last best hope #endif +// This class is thread-unsafe -- that is, instances of this class can +// not be accessed concurrently by multiple threads -- because the +// callback function for Iterate() may mutate contained values. If the +// callback functions you pass do not mutate their Value* argument, +// AddressMap can be treated as thread-compatible -- that is, it's +// safe for multiple threads to call "const" methods on this class, +// but not safe for one thread to call const methods on this class +// while another thread is calling non-const methods on the class. template <class Value> class AddressMap { public: @@ -200,6 +208,8 @@ class AddressMap { // Find cluster object for specified address. If not found // and "create" is true, create the object. If not found // and "create" is false, return NULL. + // + // This method is bitwise-const if create is false. Cluster* FindCluster(Number address, bool create) { // Look in hashtable const Number cluster_id = address >> (kBlockBits + kClusterBits); |