166 lines
3.9 KiB
C++
166 lines
3.9 KiB
C++
#include "isaac/driver/backend.h"
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#include "isaac/driver/context.h"
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#include "isaac/driver/command_queue.h"
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#include <assert.h>
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#include <stdexcept>
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#include <vector>
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namespace isaac
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{
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namespace driver
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{
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void backend::init()
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{
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if(contexts_.empty())
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{
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std::vector<Platform> platforms;
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backend::platforms(platforms);
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for(Platform const & platform: platforms)
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{
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std::vector<Device> devices;
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platform.devices(devices);
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for(Device const & device: devices){
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contexts_.push_back(new Context(device));
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queues_.insert(std::make_pair(contexts_.back(), std::vector<CommandQueue*>{new CommandQueue(*contexts_.back(), device, queue_properties)}));
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}
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}
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}
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}
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CommandQueue & backend::queue(Context const & context, unsigned int id)
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{
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assert(id < queues_.size());
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init();
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for(auto & x : queues_)
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if(x.first==&context)
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return *x.second[id];
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throw;
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}
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void backend::queues(Context const & context, std::vector<CommandQueue*> queues)
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{
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queues = queues_[&context];
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}
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Context const & backend::import(cl_context context)
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{
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for(driver::Context const * x: contexts_)
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if(x->handle().cl()==context)
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return *x;
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contexts_.emplace_back(new Context(context, false));
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return *contexts_.back();
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}
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Context const & backend::default_context()
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{
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init();
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std::list<Context const *>::const_iterator it = contexts_.begin();
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std::advance(it, default_device);
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return **it;
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}
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const std::list<Context const *> &backend::contexts()
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{
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init();
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return contexts_;
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}
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void backend::platforms(std::vector<Platform> & platforms)
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{
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#ifdef ISAAC_WITH_CUDA
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platforms.push_back(Platform(CUDA));
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#endif
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cl_uint nplatforms;
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ocl::check(clGetPlatformIDs(0, NULL, &nplatforms));
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std::vector<cl_platform_id> clplatforms(nplatforms);
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ocl::check(clGetPlatformIDs(nplatforms, clplatforms.data(), NULL));
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for(cl_platform_id p: clplatforms)
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platforms.push_back(Platform(p));
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}
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void backend::synchronize(Context const & context)
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{
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for(CommandQueue * queue: queues_.at(&context))
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queue->synchronize();
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}
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void backend::release()
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{
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//programs
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backend::programs::release();
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//queues
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for(auto & x: queues_)
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for(auto & y: x.second)
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{
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delete y;
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y = NULL;
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}
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//context
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for(auto & x: contexts_)
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{
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delete x;
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x = NULL;
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}
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}
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/* ---- Programs -----*/
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Program const & backend::programs::add(Context const & context, std::string const & name, std::string const & src)
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{
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std::map<std::string, Program*> & pgms = programs_.at(&context);
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std::map<std::string, Program*>::iterator it = pgms.find(name);
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if(it==pgms.end())
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{
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std::string extensions;
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std::string ext = "cl_khr_fp64";
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if(context.device().extensions().find(ext)!=std::string::npos)
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extensions = "#pragma OPENCL EXTENSION " + ext + " : enable\n";
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return *pgms.insert(std::make_pair(name, new driver::Program(context, extensions + src))).first->second;
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}
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return *it->second;
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}
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const Program * backend::programs::find(Context const & context, const std::string &name)
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{
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std::map<std::string, Program*> & pgms = programs_[&context];
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std::map<std::string, Program*>::const_iterator it = pgms.find(name);
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if(it==pgms.end())
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return NULL;
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return it->second;
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}
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void backend::programs::release()
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{
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for(auto & x: programs_)
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for(auto & y: x.second)
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{
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delete y.second;
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y.second = NULL;
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}
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}
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std::map<driver::Context const *, std::map<std::string, Program*> > backend::programs::programs_;
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//Static variables
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unsigned int backend::default_device = 0;
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cl_command_queue_properties backend::queue_properties = 0;
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std::list<Context const *> backend::contexts_;
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std::map<Context const *, std::vector<CommandQueue*> > backend::queues_;
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}
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}
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