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Posted to common-commits@hadoop.apache.org by ji...@apache.org on 2015/03/09 21:25:38 UTC
[12/50] [abbrv] hadoop git commit: HDFS-7879. hdfs.dll does not
export functions of the public libhdfs API. Contributed by Chris Nauroth.
HDFS-7879. hdfs.dll does not export functions of the public libhdfs API. Contributed by Chris Nauroth.
Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/aca0abef
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/aca0abef
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/aca0abef
Branch: refs/heads/HDFS-7285
Commit: aca0abefea5b6bd5249d0ee35875a598c1ed1e7c
Parents: 871bd4e
Author: Haohui Mai <wh...@apache.org>
Authored: Wed Mar 4 09:17:21 2015 -0800
Committer: Jing Zhao <ji...@apache.org>
Committed: Mon Mar 9 13:11:23 2015 -0700
----------------------------------------------------------------------
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt | 3 +
.../hadoop-hdfs/src/CMakeLists.txt | 23 +++--
.../hadoop-hdfs/src/main/native/libhdfs/hdfs.h | 92 +++++++++++++++++++-
3 files changed, 111 insertions(+), 7 deletions(-)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/hadoop/blob/aca0abef/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
----------------------------------------------------------------------
diff --git a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
index 2037973..62006d3 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
+++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
@@ -1086,6 +1086,9 @@ Release 2.7.0 - UNRELEASED
HDFS-7869. Inconsistency in the return information while performing rolling
upgrade ( J.Andreina via vinayakumarb )
+ HDFS-7879. hdfs.dll does not export functions of the public libhdfs API.
+ (Chris Nauroth via wheat9)
+
BREAKDOWN OF HDFS-7584 SUBTASKS AND RELATED JIRAS
HDFS-7720. Quota by Storage Type API, tools and ClientNameNode
http://git-wip-us.apache.org/repos/asf/hadoop/blob/aca0abef/hadoop-hdfs-project/hadoop-hdfs/src/CMakeLists.txt
----------------------------------------------------------------------
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/CMakeLists.txt b/hadoop-hdfs-project/hadoop-hdfs/src/CMakeLists.txt
index aceeac1..563727b 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/CMakeLists.txt
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/CMakeLists.txt
@@ -27,7 +27,15 @@ include(../../../hadoop-common-project/hadoop-common/src/JNIFlags.cmake NO_POLIC
function(add_dual_library LIBNAME)
add_library(${LIBNAME} SHARED ${ARGN})
add_library(${LIBNAME}_static STATIC ${ARGN})
- set_target_properties(${LIBNAME}_static PROPERTIES OUTPUT_NAME ${LIBNAME})
+ # Linux builds traditionally ship a libhdfs.a (static linking) and libhdfs.so
+ # (dynamic linking). On Windows, we cannot use the same base name for both
+ # static and dynamic, because Windows does not use distinct file extensions
+ # for a statically linked library vs. a DLL import library. Both use the
+ # .lib extension. On Windows, we'll build the static library as
+ # hdfs_static.lib.
+ if (NOT WIN32)
+ set_target_properties(${LIBNAME}_static PROPERTIES OUTPUT_NAME ${LIBNAME})
+ endif (NOT WIN32)
endfunction(add_dual_library)
# Link both a static and a dynamic target against some libraries
@@ -105,11 +113,14 @@ else (WIN32)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g -Wall -O2")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_REENTRANT -D_GNU_SOURCE")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64")
+ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fvisibility=hidden")
set(OS_DIR main/native/libhdfs/os/posix)
set(OS_LINK_LIBRARIES pthread)
set(OUT_DIR target/usr/local/lib)
endif (WIN32)
+add_definitions(-DLIBHDFS_DLL_EXPORT)
+
include_directories(
${GENERATED_JAVAH}
${CMAKE_CURRENT_SOURCE_DIR}
@@ -150,7 +161,7 @@ add_executable(test_libhdfs_ops
main/native/libhdfs/test/test_libhdfs_ops.c
)
target_link_libraries(test_libhdfs_ops
- hdfs
+ hdfs_static
${JAVA_JVM_LIBRARY}
)
@@ -158,7 +169,7 @@ add_executable(test_libhdfs_read
main/native/libhdfs/test/test_libhdfs_read.c
)
target_link_libraries(test_libhdfs_read
- hdfs
+ hdfs_static
${JAVA_JVM_LIBRARY}
)
@@ -166,7 +177,7 @@ add_executable(test_libhdfs_write
main/native/libhdfs/test/test_libhdfs_write.c
)
target_link_libraries(test_libhdfs_write
- hdfs
+ hdfs_static
${JAVA_JVM_LIBRARY}
)
@@ -196,7 +207,7 @@ add_executable(test_libhdfs_threaded
${OS_DIR}/thread.c
)
target_link_libraries(test_libhdfs_threaded
- hdfs
+ hdfs_static
native_mini_dfs
${OS_LINK_LIBRARIES}
)
@@ -206,7 +217,7 @@ add_executable(test_libhdfs_zerocopy
main/native/libhdfs/test/test_libhdfs_zerocopy.c
)
target_link_libraries(test_libhdfs_zerocopy
- hdfs
+ hdfs_static
native_mini_dfs
${OS_LINK_LIBRARIES}
)
http://git-wip-us.apache.org/repos/asf/hadoop/blob/aca0abef/hadoop-hdfs-project/hadoop-hdfs/src/main/native/libhdfs/hdfs.h
----------------------------------------------------------------------
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/native/libhdfs/hdfs.h b/hadoop-hdfs-project/hadoop-hdfs/src/main/native/libhdfs/hdfs.h
index 3406d6b..64889ed 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/native/libhdfs/hdfs.h
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/native/libhdfs/hdfs.h
@@ -24,6 +24,30 @@
#include <stdint.h> /* for uint64_t, etc. */
#include <time.h> /* for time_t */
+/*
+ * Support export of DLL symbols during libhdfs build, and import of DLL symbols
+ * during client application build. A client application may optionally define
+ * symbol LIBHDFS_DLL_IMPORT in its build. This is not strictly required, but
+ * the compiler can produce more efficient code with it.
+ */
+#ifdef WIN32
+ #ifdef LIBHDFS_DLL_EXPORT
+ #define LIBHDFS_EXTERNAL __declspec(dllexport)
+ #elif LIBHDFS_DLL_IMPORT
+ #define LIBHDFS_EXTERNAL __declspec(dllimport)
+ #else
+ #define LIBHDFS_EXTERNAL
+ #endif
+#else
+ #ifdef LIBHDFS_DLL_EXPORT
+ #define LIBHDFS_EXTERNAL __attribute__((visibility("default")))
+ #elif LIBHDFS_DLL_IMPORT
+ #define LIBHDFS_EXTERNAL __attribute__((visibility("default")))
+ #else
+ #define LIBHDFS_EXTERNAL
+ #endif
+#endif
+
#ifndef O_RDONLY
#define O_RDONLY 1
#endif
@@ -77,6 +101,7 @@ extern "C" {
* @param file The HDFS file
* @return 1 if the file is open for read; 0 otherwise
*/
+ LIBHDFS_EXTERNAL
int hdfsFileIsOpenForRead(hdfsFile file);
/**
@@ -85,6 +110,7 @@ extern "C" {
* @param file The HDFS file
* @return 1 if the file is open for write; 0 otherwise
*/
+ LIBHDFS_EXTERNAL
int hdfsFileIsOpenForWrite(hdfsFile file);
struct hdfsReadStatistics {
@@ -107,6 +133,7 @@ extern "C" {
* ENOTSUP. webhdfs, LocalFilesystem, and so forth may
* not support read statistics.
*/
+ LIBHDFS_EXTERNAL
int hdfsFileGetReadStatistics(hdfsFile file,
struct hdfsReadStatistics **stats);
@@ -115,6 +142,7 @@ extern "C" {
*
* @return the number of remote bytes read.
*/
+ LIBHDFS_EXTERNAL
int64_t hdfsReadStatisticsGetRemoteBytesRead(
const struct hdfsReadStatistics *stats);
@@ -129,6 +157,7 @@ extern "C" {
* statistics.
* Errno will also be set to this code on failure.
*/
+ LIBHDFS_EXTERNAL
int hdfsFileClearReadStatistics(hdfsFile file);
/**
@@ -136,6 +165,7 @@ extern "C" {
*
* @param stats The HDFS read statistics to free.
*/
+ LIBHDFS_EXTERNAL
void hdfsFileFreeReadStatistics(struct hdfsReadStatistics *stats);
/**
@@ -147,6 +177,7 @@ extern "C" {
* @return Returns a handle to the filesystem or NULL on error.
* @deprecated Use hdfsBuilderConnect instead.
*/
+ LIBHDFS_EXTERNAL
hdfsFS hdfsConnectAsUser(const char* nn, tPort port, const char *user);
/**
@@ -157,6 +188,7 @@ extern "C" {
* @return Returns a handle to the filesystem or NULL on error.
* @deprecated Use hdfsBuilderConnect instead.
*/
+ LIBHDFS_EXTERNAL
hdfsFS hdfsConnect(const char* nn, tPort port);
/**
@@ -170,6 +202,7 @@ extern "C" {
* @return Returns a handle to the filesystem or NULL on error.
* @deprecated Use hdfsBuilderConnect instead.
*/
+ LIBHDFS_EXTERNAL
hdfsFS hdfsConnectAsUserNewInstance(const char* nn, tPort port, const char *user );
/**
@@ -182,6 +215,7 @@ extern "C" {
* @return Returns a handle to the filesystem or NULL on error.
* @deprecated Use hdfsBuilderConnect instead.
*/
+ LIBHDFS_EXTERNAL
hdfsFS hdfsConnectNewInstance(const char* nn, tPort port);
/**
@@ -196,6 +230,7 @@ extern "C" {
* @param bld The HDFS builder
* @return Returns a handle to the filesystem, or NULL on error.
*/
+ LIBHDFS_EXTERNAL
hdfsFS hdfsBuilderConnect(struct hdfsBuilder *bld);
/**
@@ -203,6 +238,7 @@ extern "C" {
*
* @return The HDFS builder, or NULL on error.
*/
+ LIBHDFS_EXTERNAL
struct hdfsBuilder *hdfsNewBuilder(void);
/**
@@ -211,6 +247,7 @@ extern "C" {
*
* @param bld The HDFS builder
*/
+ LIBHDFS_EXTERNAL
void hdfsBuilderSetForceNewInstance(struct hdfsBuilder *bld);
/**
@@ -234,6 +271,7 @@ extern "C" {
* hdfsBuilderSetNameNodePort. However, you must not pass the
* port in two different ways.
*/
+ LIBHDFS_EXTERNAL
void hdfsBuilderSetNameNode(struct hdfsBuilder *bld, const char *nn);
/**
@@ -242,6 +280,7 @@ extern "C" {
* @param bld The HDFS builder
* @param port The port.
*/
+ LIBHDFS_EXTERNAL
void hdfsBuilderSetNameNodePort(struct hdfsBuilder *bld, tPort port);
/**
@@ -250,6 +289,7 @@ extern "C" {
* @param bld The HDFS builder
* @param userName The user name. The string will be shallow-copied.
*/
+ LIBHDFS_EXTERNAL
void hdfsBuilderSetUserName(struct hdfsBuilder *bld, const char *userName);
/**
@@ -260,6 +300,7 @@ extern "C" {
* @param kerbTicketCachePath The Kerberos ticket cache path. The string
* will be shallow-copied.
*/
+ LIBHDFS_EXTERNAL
void hdfsBuilderSetKerbTicketCachePath(struct hdfsBuilder *bld,
const char *kerbTicketCachePath);
@@ -271,6 +312,7 @@ extern "C" {
*
* @param bld The HDFS builder
*/
+ LIBHDFS_EXTERNAL
void hdfsFreeBuilder(struct hdfsBuilder *bld);
/**
@@ -284,6 +326,7 @@ extern "C" {
*
* @return 0 on success; nonzero error code otherwise.
*/
+ LIBHDFS_EXTERNAL
int hdfsBuilderConfSetStr(struct hdfsBuilder *bld, const char *key,
const char *val);
@@ -298,6 +341,7 @@ extern "C" {
* @return 0 on success; nonzero error code otherwise.
* Failure to find the key is not an error.
*/
+ LIBHDFS_EXTERNAL
int hdfsConfGetStr(const char *key, char **val);
/**
@@ -310,6 +354,7 @@ extern "C" {
* @return 0 on success; nonzero error code otherwise.
* Failure to find the key is not an error.
*/
+ LIBHDFS_EXTERNAL
int hdfsConfGetInt(const char *key, int32_t *val);
/**
@@ -317,6 +362,7 @@ extern "C" {
*
* @param val A configuration string obtained from hdfsConfGetStr
*/
+ LIBHDFS_EXTERNAL
void hdfsConfStrFree(char *val);
/**
@@ -327,6 +373,7 @@ extern "C" {
* Even if there is an error, the resources associated with the
* hdfsFS will be freed.
*/
+ LIBHDFS_EXTERNAL
int hdfsDisconnect(hdfsFS fs);
@@ -344,6 +391,7 @@ extern "C" {
* default configured values.
* @return Returns the handle to the open file or NULL on error.
*/
+ LIBHDFS_EXTERNAL
hdfsFile hdfsOpenFile(hdfsFS fs, const char* path, int flags,
int bufferSize, short replication, tSize blocksize);
@@ -355,6 +403,7 @@ extern "C" {
* ENOTSUP if the file does not support unbuffering
* Errno will also be set to this value.
*/
+ LIBHDFS_EXTERNAL
int hdfsUnbufferFile(hdfsFile file);
/**
@@ -367,6 +416,7 @@ extern "C" {
* be freed at the end of this call, even if there was an I/O
* error.
*/
+ LIBHDFS_EXTERNAL
int hdfsCloseFile(hdfsFS fs, hdfsFile file);
@@ -376,6 +426,7 @@ extern "C" {
* @param path The path to look for
* @return Returns 0 on success, -1 on error.
*/
+ LIBHDFS_EXTERNAL
int hdfsExists(hdfsFS fs, const char *path);
@@ -387,6 +438,7 @@ extern "C" {
* @param desiredPos Offset into the file to seek into.
* @return Returns 0 on success, -1 on error.
*/
+ LIBHDFS_EXTERNAL
int hdfsSeek(hdfsFS fs, hdfsFile file, tOffset desiredPos);
@@ -396,6 +448,7 @@ extern "C" {
* @param file The file handle.
* @return Current offset, -1 on error.
*/
+ LIBHDFS_EXTERNAL
tOffset hdfsTell(hdfsFS fs, hdfsFile file);
@@ -413,6 +466,7 @@ extern "C" {
* and set errno to EINTR if data is temporarily unavailable,
* but we are not yet at the end of the file.
*/
+ LIBHDFS_EXTERNAL
tSize hdfsRead(hdfsFS fs, hdfsFile file, void* buffer, tSize length);
/**
@@ -424,6 +478,7 @@ extern "C" {
* @param length The length of the buffer.
* @return See hdfsRead
*/
+ LIBHDFS_EXTERNAL
tSize hdfsPread(hdfsFS fs, hdfsFile file, tOffset position,
void* buffer, tSize length);
@@ -436,6 +491,7 @@ extern "C" {
* @param length The no. of bytes to write.
* @return Returns the number of bytes written, -1 on error.
*/
+ LIBHDFS_EXTERNAL
tSize hdfsWrite(hdfsFS fs, hdfsFile file, const void* buffer,
tSize length);
@@ -446,6 +502,7 @@ extern "C" {
* @param file The file handle.
* @return Returns 0 on success, -1 on error.
*/
+ LIBHDFS_EXTERNAL
int hdfsFlush(hdfsFS fs, hdfsFile file);
@@ -456,6 +513,7 @@ extern "C" {
* @param file file handle
* @return 0 on success, -1 on error and sets errno
*/
+ LIBHDFS_EXTERNAL
int hdfsHFlush(hdfsFS fs, hdfsFile file);
@@ -467,6 +525,7 @@ extern "C" {
* @param file file handle
* @return 0 on success, -1 on error and sets errno
*/
+ LIBHDFS_EXTERNAL
int hdfsHSync(hdfsFS fs, hdfsFile file);
@@ -477,6 +536,7 @@ extern "C" {
* @param file The file handle.
* @return Returns available bytes; -1 on error.
*/
+ LIBHDFS_EXTERNAL
int hdfsAvailable(hdfsFS fs, hdfsFile file);
@@ -488,6 +548,7 @@ extern "C" {
* @param dst The path of destination file.
* @return Returns 0 on success, -1 on error.
*/
+ LIBHDFS_EXTERNAL
int hdfsCopy(hdfsFS srcFS, const char* src, hdfsFS dstFS, const char* dst);
@@ -499,6 +560,7 @@ extern "C" {
* @param dst The path of destination file.
* @return Returns 0 on success, -1 on error.
*/
+ LIBHDFS_EXTERNAL
int hdfsMove(hdfsFS srcFS, const char* src, hdfsFS dstFS, const char* dst);
@@ -511,6 +573,7 @@ extern "C" {
* case of a file the recursive argument is irrelevant.
* @return Returns 0 on success, -1 on error.
*/
+ LIBHDFS_EXTERNAL
int hdfsDelete(hdfsFS fs, const char* path, int recursive);
/**
@@ -520,6 +583,7 @@ extern "C" {
* @param newPath The path of the destination file.
* @return Returns 0 on success, -1 on error.
*/
+ LIBHDFS_EXTERNAL
int hdfsRename(hdfsFS fs, const char* oldPath, const char* newPath);
@@ -531,6 +595,7 @@ extern "C" {
* @param bufferSize The length of user-buffer.
* @return Returns buffer, NULL on error.
*/
+ LIBHDFS_EXTERNAL
char* hdfsGetWorkingDirectory(hdfsFS fs, char *buffer, size_t bufferSize);
@@ -541,6 +606,7 @@ extern "C" {
* @param path The path of the new 'cwd'.
* @return Returns 0 on success, -1 on error.
*/
+ LIBHDFS_EXTERNAL
int hdfsSetWorkingDirectory(hdfsFS fs, const char* path);
@@ -551,6 +617,7 @@ extern "C" {
* @param path The path of the directory.
* @return Returns 0 on success, -1 on error.
*/
+ LIBHDFS_EXTERNAL
int hdfsCreateDirectory(hdfsFS fs, const char* path);
@@ -561,6 +628,7 @@ extern "C" {
* @param path The path of the file.
* @return Returns 0 on success, -1 on error.
*/
+ LIBHDFS_EXTERNAL
int hdfsSetReplication(hdfsFS fs, const char* path, int16_t replication);
@@ -590,6 +658,7 @@ extern "C" {
* @return Returns a dynamically-allocated array of hdfsFileInfo
* objects; NULL on error.
*/
+ LIBHDFS_EXTERNAL
hdfsFileInfo *hdfsListDirectory(hdfsFS fs, const char* path,
int *numEntries);
@@ -603,6 +672,7 @@ extern "C" {
* @return Returns a dynamically-allocated hdfsFileInfo object;
* NULL on error.
*/
+ LIBHDFS_EXTERNAL
hdfsFileInfo *hdfsGetPathInfo(hdfsFS fs, const char* path);
@@ -612,6 +682,7 @@ extern "C" {
* objects.
* @param numEntries The size of the array.
*/
+ LIBHDFS_EXTERNAL
void hdfsFreeFileInfo(hdfsFileInfo *hdfsFileInfo, int numEntries);
/**
@@ -620,6 +691,7 @@ extern "C" {
* @return -1 if there was an error (errno will be set), 0 if the file is
* not encrypted, 1 if the file is encrypted.
*/
+ LIBHDFS_EXTERNAL
int hdfsFileIsEncrypted(hdfsFileInfo *hdfsFileInfo);
@@ -635,6 +707,7 @@ extern "C" {
* @return Returns a dynamically-allocated 2-d array of blocks-hosts;
* NULL on error.
*/
+ LIBHDFS_EXTERNAL
char*** hdfsGetHosts(hdfsFS fs, const char* path,
tOffset start, tOffset length);
@@ -645,6 +718,7 @@ extern "C" {
* objects.
* @param numEntries The size of the array.
*/
+ LIBHDFS_EXTERNAL
void hdfsFreeHosts(char ***blockHosts);
@@ -656,6 +730,7 @@ extern "C" {
*
* @return Returns the default blocksize, or -1 on error.
*/
+ LIBHDFS_EXTERNAL
tOffset hdfsGetDefaultBlockSize(hdfsFS fs);
@@ -669,6 +744,7 @@ extern "C" {
*
* @return Returns the default blocksize, or -1 on error.
*/
+ LIBHDFS_EXTERNAL
tOffset hdfsGetDefaultBlockSizeAtPath(hdfsFS fs, const char *path);
@@ -677,6 +753,7 @@ extern "C" {
* @param fs The configured filesystem handle.
* @return Returns the raw-capacity; -1 on error.
*/
+ LIBHDFS_EXTERNAL
tOffset hdfsGetCapacity(hdfsFS fs);
@@ -685,6 +762,7 @@ extern "C" {
* @param fs The configured filesystem handle.
* @return Returns the total-size; -1 on error.
*/
+ LIBHDFS_EXTERNAL
tOffset hdfsGetUsed(hdfsFS fs);
/**
@@ -696,6 +774,7 @@ extern "C" {
* @param group Group string. Set to NULL for 'no change'
* @return 0 on success else -1
*/
+ LIBHDFS_EXTERNAL
int hdfsChown(hdfsFS fs, const char* path, const char *owner,
const char *group);
@@ -706,7 +785,8 @@ extern "C" {
* @param mode the bitmask to set it to
* @return 0 on success else -1
*/
- int hdfsChmod(hdfsFS fs, const char* path, short mode);
+ LIBHDFS_EXTERNAL
+ int hdfsChmod(hdfsFS fs, const char* path, short mode);
/**
* hdfsUtime
@@ -716,6 +796,7 @@ extern "C" {
* @param atime new access time or -1 for no change
* @return 0 on success else -1
*/
+ LIBHDFS_EXTERNAL
int hdfsUtime(hdfsFS fs, const char* path, tTime mtime, tTime atime);
/**
@@ -728,6 +809,7 @@ extern "C" {
* not be allocated. If NULL is returned, errno will
* contain the error number.
*/
+ LIBHDFS_EXTERNAL
struct hadoopRzOptions *hadoopRzOptionsAlloc(void);
/**
@@ -739,6 +821,7 @@ extern "C" {
*
* @return 0 on success; -1 plus errno on failure.
*/
+ LIBHDFS_EXTERNAL
int hadoopRzOptionsSetSkipChecksum(
struct hadoopRzOptions *opts, int skip);
@@ -756,6 +839,7 @@ extern "C" {
* instantiated;
* -1 plus errno otherwise.
*/
+ LIBHDFS_EXTERNAL
int hadoopRzOptionsSetByteBufferPool(
struct hadoopRzOptions *opts, const char *className);
@@ -765,6 +849,7 @@ extern "C" {
* @param opts The options structure to free.
* Any associated ByteBufferPool will also be freed.
*/
+ LIBHDFS_EXTERNAL
void hadoopRzOptionsFree(struct hadoopRzOptions *opts);
/**
@@ -790,6 +875,7 @@ extern "C" {
* zero-copy read, and there was no ByteBufferPool
* supplied.
*/
+ LIBHDFS_EXTERNAL
struct hadoopRzBuffer* hadoopReadZero(hdfsFile file,
struct hadoopRzOptions *opts, int32_t maxLength);
@@ -799,6 +885,7 @@ extern "C" {
* @param buffer a buffer returned from readZero.
* @return the length of the buffer.
*/
+ LIBHDFS_EXTERNAL
int32_t hadoopRzBufferLength(const struct hadoopRzBuffer *buffer);
/**
@@ -811,6 +898,7 @@ extern "C" {
* @return a pointer to the start of the buffer. This will be
* NULL when end-of-file has been reached.
*/
+ LIBHDFS_EXTERNAL
const void *hadoopRzBufferGet(const struct hadoopRzBuffer *buffer);
/**
@@ -820,12 +908,14 @@ extern "C" {
* the same stream you called hadoopReadZero on.
* @param buffer The buffer to release.
*/
+ LIBHDFS_EXTERNAL
void hadoopRzBufferFree(hdfsFile file, struct hadoopRzBuffer *buffer);
#ifdef __cplusplus
}
#endif
+#undef LIBHDFS_EXTERNAL
#endif /*LIBHDFS_HDFS_H*/
/**