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//
// Copyright 2012 Francisco Jerez
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
// OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#include "core/context.hpp"
using namespace clover;
context::context(const property_list &props,
const ref_vector<device> &devs,
const notify_action ¬ify) :
notify(notify), props(props), devs(devs) {
}
context::~context() {
while (_destroy_notify.size()) {
_destroy_notify.top()();
_destroy_notify.pop();
}
}
bool
context::operator==(const context &ctx) const {
return this == &ctx;
}
bool
context::operator!=(const context &ctx) const {
return this != &ctx;
}
void
context::destroy_notify(std::function<void ()> f) {
_destroy_notify.push(f);
}
const context::property_list &
context::properties() const {
return props;
}
context::device_range
context::devices() const {
return map(evals(), devs);
}
void
context::add_svm_allocation(const void *ptr, size_t size) {
svm_ptrs.emplace(ptr, size);
}
void
context::remove_svm_allocation(const void *ptr) {
svm_ptrs.erase(ptr);
}
context::svm_pointer_map::value_type
context::find_svm_allocation(const void *ptr) const {
// std::prev on an iterator of an empty container causes SIGSEGVs
if (svm_ptrs.empty())
return { nullptr, 0 };
auto it = std::prev(svm_ptrs.upper_bound(ptr));
if (it == svm_ptrs.end())
return { nullptr, 0 };
uintptr_t base = reinterpret_cast<uintptr_t>((*it).first);
uintptr_t end = (*it).second + base;
uintptr_t ptrv = reinterpret_cast<uintptr_t>(ptr);
if (ptrv >= base && ptrv < end)
return *it;
return { nullptr, 0 };
}
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