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-rw-r--r--src/librbd/cache/pwl/rwl/Request.cc86
1 files changed, 86 insertions, 0 deletions
diff --git a/src/librbd/cache/pwl/rwl/Request.cc b/src/librbd/cache/pwl/rwl/Request.cc
new file mode 100644
index 000000000..a6b81d55b
--- /dev/null
+++ b/src/librbd/cache/pwl/rwl/Request.cc
@@ -0,0 +1,86 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "Request.h"
+#include "librbd/cache/pwl/AbstractWriteLog.h"
+
+#define dout_subsys ceph_subsys_rbd_pwl
+#undef dout_prefix
+#define dout_prefix *_dout << "librbd::cache::pwl::rwl::Request: " << this \
+ << " " << __func__ << ": "
+
+namespace librbd {
+namespace cache {
+namespace pwl {
+namespace rwl {
+
+template <typename T>
+void C_WriteRequest<T>::setup_buffer_resources(
+ uint64_t *bytes_cached, uint64_t *bytes_dirtied, uint64_t *bytes_allocated,
+ uint64_t *number_lanes, uint64_t *number_log_entries,
+ uint64_t *number_unpublished_reserves) {
+
+ ceph_assert(!this->m_resources.allocated);
+
+ auto image_extents_size = this->image_extents.size();
+ this->m_resources.buffers.reserve(image_extents_size);
+
+ *bytes_cached = 0;
+ *bytes_allocated = 0;
+ *number_lanes = image_extents_size;
+ *number_log_entries = image_extents_size;
+ *number_unpublished_reserves = image_extents_size;
+
+ for (auto &extent : this->image_extents) {
+ this->m_resources.buffers.emplace_back();
+ struct WriteBufferAllocation &buffer = this->m_resources.buffers.back();
+ buffer.allocation_size = MIN_WRITE_ALLOC_SIZE;
+ buffer.allocated = false;
+ *bytes_cached += extent.second;
+ if (extent.second > buffer.allocation_size) {
+ buffer.allocation_size = extent.second;
+ }
+ *bytes_allocated += buffer.allocation_size;
+ }
+ *bytes_dirtied = *bytes_cached;
+}
+
+template <typename T>
+std::ostream &operator<<(std::ostream &os,
+ const C_CompAndWriteRequest<T> &req) {
+ os << (C_WriteRequest<T>&)req
+ << " cmp_bl=" << req.cmp_bl
+ << ", read_bl=" << req.read_bl
+ << ", compare_succeeded=" << req.compare_succeeded
+ << ", mismatch_offset=" << req.mismatch_offset;
+ return os;
+}
+
+template <typename T>
+void C_WriteSameRequest<T>::setup_buffer_resources(
+ uint64_t *bytes_cached, uint64_t *bytes_dirtied, uint64_t *bytes_allocated,
+ uint64_t *number_lanes, uint64_t *number_log_entries,
+ uint64_t *number_unpublished_reserves) {
+ ceph_assert(this->image_extents.size() == 1);
+ *number_log_entries = 1;
+ *bytes_dirtied += this->image_extents[0].second;
+ auto pattern_length = this->bl.length();
+ this->m_resources.buffers.emplace_back();
+ struct WriteBufferAllocation &buffer = this->m_resources.buffers.back();
+ buffer.allocation_size = MIN_WRITE_ALLOC_SIZE;
+ buffer.allocated = false;
+ *bytes_cached += pattern_length;
+ if (pattern_length > buffer.allocation_size) {
+ buffer.allocation_size = pattern_length;
+ }
+ *bytes_allocated += buffer.allocation_size;
+}
+
+} // namespace rwl
+} // namespace pwl
+} // namespace cache
+} // namespace librbd
+
+template class librbd::cache::pwl::rwl::C_WriteRequest<librbd::cache::pwl::AbstractWriteLog<librbd::ImageCtx> >;
+template class librbd::cache::pwl::rwl::C_WriteSameRequest<librbd::cache::pwl::AbstractWriteLog<librbd::ImageCtx> >;
+template class librbd::cache::pwl::rwl::C_CompAndWriteRequest<librbd::cache::pwl::AbstractWriteLog<librbd::ImageCtx> >;