boost/compute
2
0
Fork 0
mirror of https://github.com/boostorg/compute.git synced 2026-01-27 18:52:15 +00:00
Code Issues Projects Releases Wiki Activity

Merge pull request #451 from ddemidov/offline-cache-optimization

Browse Source 
Offline cache optimization
This commit is contained in:
Kyle Lutz
2015-04-14 20:18:47 -07:00
parent 72c75f189d d4651113e7
commit 08eb4e311a
3 changed files with 33 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
include/boost/compute/detail/meta_kernel.hpp
View File

@@ -335,7 +335,8 @@ public:
std::string source = this->source();
// generate cache key
std::string cache_key = "__boost_meta_kernel_" + detail::sha1(source);
std::string cache_key = "__boost_meta_kernel_" +
static_cast<std::string>(detail::sha1(source));
// load program cache
boost::shared_ptr<program_cache> cache =

33
include/boost/compute/detail/sha1.hpp
View File

@@ -19,20 +19,31 @@ namespace boost {
namespace compute {
namespace detail {
// Returns SHA1 hash of the string parameter.
inline std::string sha1(const std::string &src) {
boost::uuids::detail::sha1 sha1;
sha1.process_bytes(src.c_str(), src.size());
// Accumulates SHA1 hash of the passed strings.
class sha1 {
public:
sha1(const std::string &s = "") {
if (!s.empty()) this->process(s);
}
unsigned int hash[5];
sha1.get_digest(hash);
sha1& process(const std::string &s) {
h.process_bytes(s.c_str(), s.size());
return *this;
}
std::ostringstream buf;
for(int i = 0; i < 5; ++i)
buf << std::hex << std::setfill('0') << std::setw(8) << hash[i];
operator std::string() {
unsigned int digest[5];
h.get_digest(digest);
return buf.str();
}
std::ostringstream buf;
for(int i = 0; i < 5; ++i)
buf << std::hex << std::setfill('0') << std::setw(8) << digest[i];
return buf.str();
}
private:
boost::uuids::detail::sha1 h;
};
} // end detail namespace
} // end compute namespace

21
include/boost/compute/program.hpp
View File

@@ -505,19 +505,16 @@ public:
{
#ifdef BOOST_COMPUTE_USE_OFFLINE_CACHE
// Get hash string for the kernel.
std::string hash;
{
device d(context.get_device());
platform p = d.platform();
device d = context.get_device();
platform p = d.platform();
std::ostringstream src;
src << "// " << p.name() << " v" << p.version() << "\n"
<< "// " << context.get_device().name() << "\n"
<< "// " << options << "\n\n"
<< source;
hash = detail::sha1(src.str());
}
detail::sha1 hash;
hash.process( p.name() )
.process( p.version() )
.process( d.name() )
.process( options )
.process( source )
;
// Try to get cached program binaries:
try {