1282e98a01
This commit renames the arithmetic atomic operations in opal to indicate that they return the new value not the old value. This naming differentiates these routines from new functions that return the old value. Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
119 строки
4.0 KiB
C
119 строки
4.0 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
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/*
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* Copyright (c) 2006-2007 Voltaire All rights reserved.
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* Copyright (c) 2015 Los Alamos National Security, LLC. All rights
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* reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#ifndef MCA_BTL_OPENIB_EAGER_RDMA_BUF_H
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#define MCA_BTL_OPENIB_EAGER_RDMA_BUF_H
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#include "opal_config.h"
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#include "btl_openib.h"
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BEGIN_C_DECLS
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struct mca_btl_openib_eager_rdma_local_t {
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opal_ptr_t base; /**< buffer for RDMAing eager messages */
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void *alloc_base; /**< allocated base */
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mca_btl_openib_recv_frag_t *frags;
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mca_btl_openib_reg_t *reg;
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uint16_t head; /**< RDMA buffer to poll */
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uint16_t tail; /**< Needed for credit managment */
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int32_t credits; /**< number of RDMA credits */
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int32_t rd_win;
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#if OPAL_ENABLE_DEBUG
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uint32_t seq;
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#endif
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opal_mutex_t lock; /**< guard access to RDMA buffer */
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int32_t rd_low;
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};
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typedef struct mca_btl_openib_eager_rdma_local_t mca_btl_openib_eager_rdma_local_t;
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struct mca_btl_openib_eager_rdma_remote_t {
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opal_ptr_t base; /**< address of remote buffer */
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uint32_t rkey; /**< RKey for accessing remote buffer */
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int32_t head; /**< RDMA buffer to post to */
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int32_t tokens; /**< number of rdam tokens */
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#if OPAL_ENABLE_DEBUG
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uint32_t seq;
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#endif
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};
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typedef struct mca_btl_openib_eager_rdma_remote_t mca_btl_openib_eager_rdma_remote_t;
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#define MCA_BTL_OPENIB_RDMA_FRAG(F) \
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(openib_frag_type(F) == MCA_BTL_OPENIB_FRAG_EAGER_RDMA)
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#define EAGER_RDMA_BUFFER_REMOTE (0)
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#define EAGER_RDMA_BUFFER_LOCAL (0xff)
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#ifdef WORDS_BIGENDIAN
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#define MCA_BTL_OPENIB_RDMA_FRAG_GET_SIZE(F) ((F)->u.size >> 8)
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#define MCA_BTL_OPENIB_RDMA_FRAG_SET_SIZE(F, S) \
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((F)->u.size = (S) << 8)
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#else
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#define MCA_BTL_OPENIB_RDMA_FRAG_GET_SIZE(F) ((F)->u.size & 0x00ffffff)
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#define MCA_BTL_OPENIB_RDMA_FRAG_SET_SIZE(F, S) \
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((F)->u.size = (S) & 0x00ffffff)
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#endif
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#define MCA_BTL_OPENIB_RDMA_FRAG_LOCAL(F) \
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(((volatile uint8_t*)(F)->ftr->u.buf)[3] != EAGER_RDMA_BUFFER_REMOTE)
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#define MCA_BTL_OPENIB_RDMA_FRAG_REMOTE(F) \
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(!MCA_BTL_OPENIB_RDMA_FRAG_LOCAL(F))
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#define MCA_BTL_OPENIB_RDMA_MAKE_REMOTE(F) do { \
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((volatile uint8_t*)(F)->u.buf)[3] = EAGER_RDMA_BUFFER_REMOTE; \
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}while (0)
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#define MCA_BTL_OPENIB_RDMA_MAKE_LOCAL(F) do { \
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((volatile uint8_t*)(F)->u.buf)[3] = EAGER_RDMA_BUFFER_LOCAL; \
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}while (0)
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#define MCA_BTL_OPENIB_GET_LOCAL_RDMA_FRAG(E, I) \
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(&(E)->eager_rdma_local.frags[(I)])
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#define MCA_BTL_OPENIB_RDMA_NEXT_INDEX(I) do { \
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(I) = ((I) + 1); \
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if((I) == \
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mca_btl_openib_component.eager_rdma_num) \
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(I) = 0; \
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} while (0)
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#if OPAL_ENABLE_DEBUG
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/**
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* @brief read and increment the remote head index and generate a sequence
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* number
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*/
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#define MCA_BTL_OPENIB_RDMA_MOVE_INDEX(HEAD, OLD_HEAD, SEQ) \
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do { \
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(SEQ) = OPAL_THREAD_ADD_FETCH32(&(HEAD), 1) - 1; \
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(OLD_HEAD) = (SEQ) % mca_btl_openib_component.eager_rdma_num; \
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} while(0)
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#else
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/**
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* @brief read and increment the remote head index
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*/
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#define MCA_BTL_OPENIB_RDMA_MOVE_INDEX(HEAD, OLD_HEAD) \
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do { \
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(OLD_HEAD) = (OPAL_THREAD_ADD_FETCH32(&(HEAD), 1) - 1) % mca_btl_openib_component.eager_rdma_num; \
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} while(0)
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#endif
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END_C_DECLS
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#endif
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