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Add clear_resolved_cache implementation (#893)

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2 files changed

+16

-3

lines changed

boost/network/protocol/http/policies
- async_resolver.hpp
- sync_resolver.hpp

2 files changed

+16

-3

lines changed

`‎boost/network/protocol/http/policies/async_resolver.hpp`

Lines changed: 8 additions & 2 deletions

Original file line number	Diff line number	Diff line change
`@@ -36,18 +36,21 @@ struct async_resolver : std::enable_shared_from_this<async_resolver<Tag> > {`
`36`	`36`	`typedef std::function<void(resolver_type &, string_type, std::uint16_t,`
`37`	`37`	`resolve_completion_function)> resolve_function;`
`38`	`38`
	`39`	`+voidclear_resolved_cache() { clear_cache_.store(true); }`
	`40`	`+`
`39`	`41`	`protected:`
`40`	`42`	`bool cache_resolved_;`
	`43`	`+ std::atomic<bool> clear_cache_;`
`41`	`44`	`endpoint_cache endpoint_cache_;`
`42`	`45`	`std::shared_ptr<boost::asio::io_service> service_;`
`43`	`46`	`std::shared_ptr<boost::asio::io_service::strand> resolver_strand_;`
`44`	`47`
`45`	`48`	`explicitasync_resolver(bool cache_resolved)`
`46`		`- : cache_resolved_(cache_resolved), endpoint_cache_() {}`
	`49`	`+ : cache_resolved_(cache_resolved),clear_cache_(false),endpoint_cache_() {}`
`47`	`50`
`48`	`51`	`voidresolve(resolver_type &resolver_, string_typeconst &host,`
`49`	`52`	`std::uint16_t port, resolve_completion_function once_resolved) {`
`50`		`-if (cache_resolved_) {`
	`53`	`+if (cache_resolved_ && !clear_cache_.load()) {`
`51`	`54`	`typename endpoint_cache::iterator iter =`
`52`	`55`	`endpoint_cache_.find(boost::to_lower_copy(host));`
`53`	`56`	`if (iter != endpoint_cache_.end()) {`
`@@ -74,6 +77,9 @@ struct async_resolver : std::enable_shared_from_this<async_resolver<Tag> > {`
`74`	`77`	`typename endpoint_cache::iterator iter;`
`75`	`78`	`bool inserted =false;`
`76`	`79`	`if (!ec && cache_resolved_) {`
	`80`	`+if (clear_cache_.exchange(false)) {`
	`81`	`+ endpoint_cache_.clear();`
	`82`	`+ }`
`77`	`83`	`std::tie(iter, inserted) = endpoint_cache_.insert(std::make_pair(`
`78`	`84`	`host,std::make_pair(endpoint_iterator,resolver_iterator())));`
`79`	`85`	`once_resolved(ec, iter->second);`

`‎boost/network/protocol/http/policies/sync_resolver.hpp`

Lines changed: 8 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -27,19 +27,26 @@ struct sync_resolver {`
`27`	`27`	`typedef std::pair<resolver_iterator, resolver_iterator>`
`28`	`28`	`resolver_iterator_pair;`
`29`	`29`
	`30`	`+voidclear_resolved_cache() { clear_cache_.store(true); }`
	`31`	`+`
`30`	`32`	`protected:`
`31`	`33`	`typedeftypename string<Tag>::type string_type;`
`32`	`34`	`typedef std::unordered_map<string_type, resolver_iterator_pair>`
`33`	`35`	`resolved_cache;`
`34`	`36`	`resolved_cache endpoint_cache_;`
`35`	`37`	`bool cache_resolved_;`
	`38`	`+ std::atomic<bool> clear_cache_;`
`36`	`39`
`37`		`-explicitsync_resolver(bool cache_resolved) : cache_resolved_(cache_resolved) {}`
	`40`	`+explicitsync_resolver(bool cache_resolved)`
	`41`	`+ : cache_resolved_(cache_resolved), clear_cache_(false) {}`
`38`	`42`
`39`	`43`	`resolver_iterator_pairresolve(resolver_type& resolver_,`
`40`	`44`	`string_type/unused/const& hostname,`
`41`	`45`	`string_typeconst& port) {`
`42`	`46`	`if (cache_resolved_) {`
	`47`	`+if (clear_cache_.exchange(false)) {`
	`48`	`+ endpoint_cache_.clear();`
	`49`	`+ }`
`43`	`50`	`typename resolved_cache::iterator cached_iterator =`
`44`	`51`	`endpoint_cache_.find(hostname);`
`45`	`52`	`if (cached_iterator == endpoint_cache_.end()) {`

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`‎boost/network/protocol/http/policies/async_resolver.hpp`

`‎boost/network/protocol/http/policies/sync_resolver.hpp`

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