diff options
Diffstat (limited to 'libbuild2/cc/module.hxx')
| -rw-r--r-- | libbuild2/cc/module.hxx | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/libbuild2/cc/module.hxx b/libbuild2/cc/module.hxx index a91d723..2a8611b 100644 --- a/libbuild2/cc/module.hxx +++ b/libbuild2/cc/module.hxx @@ -4,6 +4,8 @@ #ifndef LIBBUILD2_CC_MODULE_HXX #define LIBBUILD2_CC_MODULE_HXX +#include <unordered_map> + #include <libbuild2/types.hxx> #include <libbuild2/utility.hxx> @@ -78,6 +80,37 @@ namespace build2 bool new_config = false; // See guess() and init() for details. + // Header cache (see compile_rule::enter_header()). + // + // We place it into the config module so that we have an option of + // sharing it for the entire weak amalgamation. + // + public: + // Keep the hash in the key. This way we can compute it outside of the + // lock. + // + struct header_key + { + path file; + size_t hash; + + friend bool + operator== (const header_key& x, const header_key& y) + { + return x.file == y.file; // Note: hash was already compared. + } + }; + + struct header_key_hasher + { + size_t operator() (const header_key& k) const {return k.hash;} + }; + + mutable shared_mutex header_map_mutex; + mutable std::unordered_map<header_key, + const file*, + header_key_hasher> header_map; + private: // Defined in gcc.cxx. // @@ -105,10 +138,10 @@ namespace build2 { public: explicit - module (data&& d) + module (data&& d, const scope& rs) : common (move (d)), link_rule (move (d)), - compile_rule (move (d)), + compile_rule (move (d), rs), install_rule (move (d), *this), libux_install_rule (move (d), *this) {} |