Using env to Insert the Agent
When MemoryScape attaches to a process that is already running, the agent must already be associated with it. You can do this in two ways:
Manually link the agent as is described in previous sections.Start the program using env (see man env on your system). This pushes the agent into your program.The variables that you must use on each platform are shown in the following table. The placeholder <hia_dir> represents the directory in which the agent is found. See the note at the end of the previous section for a tip on how to determine this location.
Platform | Variable |
|---|---|
Apple Mac OS X | DYLD_INSERT_LIBRARIES=<hia_dir>/libtvheap.dylib |
IBM AIX | MALLOCTYPE=user:tvheap_mr.a If you are already using MALLOCTYPE for another purpose, reassign its value to the variable TVHEAP_MALLOCTYPE and assign MALLOCTYPE as above; when the agent starts it will correctly pass on the options. |
Linux 32-bit 64-bit | LD_PRELOAD=<hia_dir>/libtvheap.so LD_PRELOAD=<hia_dir>/libtvheap_64.so |
Sun 32-bit generic 32-bit specific 64-bit generic 64-bit specific | LD_PRELOAD=<hia_dir>/libtvheap.so LD_PRELOAD_32=<hia_dir>/libtvheap.so LD_PRELOAD=<hia_dir>/libtvheap_64.so LD_PRELOAD_64=<hia_dir>/libtvheap.so If the agent is the only library you are preloading, use the generic variable. Otherwise use whichever variable was used for the other preloaded libraries. |
NOTE: Preloading cannot be used on the Cray platform.
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