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Get the size of heap and stack per process in Linux
malloc() - Does it use brk() or mmap()How to find load relocation for a PIE binary?How to determine CPU and memory consumption from inside a process?What and where are the stack and heap?Which is faster: Stack allocation or Heap allocationImprove INSERT-per-second performance of SQLite?Program stack and heap, how do they work?Windows assembly heap and stack?Is there a function to set a process stack/heap memory allocation?Linux Stack SizesHow to find if a variable is allocated in stack or heap?Can a UNIX process cause its heap and stack to step on each other?
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I wanted to know the size of heap and stack per process in linux. Is there any way to find it?
I found out that sbrk(0) will give me the end of heap. But how can I find the start of heap to get the heap size?
Also on stack size is there any way to find the start of stack and current stack pointer address per process through any library calls or system calls?
c linux stack heap
edited Mar 9 at 3:55
jww
54.2k41234515
asked Oct 19 '16 at 9:55
shim_mangshim_mang
77212
add a comment |
I wanted to know the size of heap and stack per process in linux. Is there any way to find it?
I found out that sbrk(0) will give me the end of heap. But how can I find the start of heap to get the heap size?
Also on stack size is there any way to find the start of stack and current stack pointer address per process through any library calls or system calls?
c linux stack heap
edited Mar 9 at 3:55
jww
54.2k41234515
asked Oct 19 '16 at 9:55
shim_mangshim_mang
77212
add a comment |
I wanted to know the size of heap and stack per process in linux. Is there any way to find it?
I found out that sbrk(0) will give me the end of heap. But how can I find the start of heap to get the heap size?
Also on stack size is there any way to find the start of stack and current stack pointer address per process through any library calls or system calls?
c linux stack heap
edited Mar 9 at 3:55
jww
54.2k41234515
asked Oct 19 '16 at 9:55
shim_mangshim_mang
77212
I wanted to know the size of heap and stack per process in linux. Is there any way to find it?
I found out that sbrk(0) will give me the end of heap. But how can I find the start of heap to get the heap size?
Also on stack size is there any way to find the start of stack and current stack pointer address per process through any library calls or system calls?
c linux stack heap
c linux stack heap
edited Mar 9 at 3:55
jww
54.2k41234515
asked Oct 19 '16 at 9:55
shim_mangshim_mang
77212
edited Mar 9 at 3:55
jww
54.2k41234515
asked Oct 19 '16 at 9:55
shim_mangshim_mang
77212
edited Mar 9 at 3:55
jww
54.2k41234515
edited Mar 9 at 3:55
jww
54.2k41234515
edited Mar 9 at 3:55
jww
54.2k41234515
54.2k41234515
asked Oct 19 '16 at 9:55
shim_mangshim_mang
77212
asked Oct 19 '16 at 9:55
shim_mangshim_mang
77212
asked Oct 19 '16 at 9:55
shim_mangshim_mang
77212
77212
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
On Linux, you can read /proc/[PID]/maps and find [heap] and [stack] entries.
But for the GLIBC heap implementations usually used on Linux, the "heap" consists of both memory obtained via sbrk() that shows up in the /proc/[PID]/maps file as [heap] and memory obtained via mmap() - see this quesiton. So the "size" of the heap is going to be very hard to determine with certainty.
And the region labelled [stack] in the maps file is the stack for the main thread only. Multithreaded processes will have multiple stacks, one for each thread. And they will show up in the maps file as anonymous memory - maybe. The application can control the memory used for a thread's stack via the use of pthread_attr_setstack() and set it to any memory the application might use.
edited May 23 '17 at 12:00
Community♦
11
answered Oct 19 '16 at 11:36
Andrew HenleAndrew Henle
20.7k31535
Aren't there any system call to find out the stack and heap size?
– shim_mang
Oct 19 '16 at 12:46
@shim_mang The "system call"s used here are open(), read() and close() on /proc/PID/maps file.
– Kamil Cuk
Mar 9 at 7:00
add a comment |
You can get in the below file. You should be root user.
/proc/<pid>/maps
answered Oct 19 '16 at 11:37
Vijay S BVijay S B
717617
add a comment |
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2 Answers
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active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
On Linux, you can read /proc/[PID]/maps and find [heap] and [stack] entries.
But for the GLIBC heap implementations usually used on Linux, the "heap" consists of both memory obtained via sbrk() that shows up in the /proc/[PID]/maps file as [heap] and memory obtained via mmap() - see this quesiton. So the "size" of the heap is going to be very hard to determine with certainty.
And the region labelled [stack] in the maps file is the stack for the main thread only. Multithreaded processes will have multiple stacks, one for each thread. And they will show up in the maps file as anonymous memory - maybe. The application can control the memory used for a thread's stack via the use of pthread_attr_setstack() and set it to any memory the application might use.
edited May 23 '17 at 12:00
Community♦
11
answered Oct 19 '16 at 11:36
Andrew HenleAndrew Henle
20.7k31535
Aren't there any system call to find out the stack and heap size?
– shim_mang
Oct 19 '16 at 12:46
@shim_mang The "system call"s used here are open(), read() and close() on /proc/PID/maps file.
– Kamil Cuk
Mar 9 at 7:00
add a comment |
On Linux, you can read /proc/[PID]/maps and find [heap] and [stack] entries.
But for the GLIBC heap implementations usually used on Linux, the "heap" consists of both memory obtained via sbrk() that shows up in the /proc/[PID]/maps file as [heap] and memory obtained via mmap() - see this quesiton. So the "size" of the heap is going to be very hard to determine with certainty.
And the region labelled [stack] in the maps file is the stack for the main thread only. Multithreaded processes will have multiple stacks, one for each thread. And they will show up in the maps file as anonymous memory - maybe. The application can control the memory used for a thread's stack via the use of pthread_attr_setstack() and set it to any memory the application might use.
edited May 23 '17 at 12:00
Community♦
11
answered Oct 19 '16 at 11:36
Andrew HenleAndrew Henle
20.7k31535
Aren't there any system call to find out the stack and heap size?
– shim_mang
Oct 19 '16 at 12:46
@shim_mang The "system call"s used here are open(), read() and close() on /proc/PID/maps file.
– Kamil Cuk
Mar 9 at 7:00
add a comment |
On Linux, you can read /proc/[PID]/maps and find [heap] and [stack] entries.
But for the GLIBC heap implementations usually used on Linux, the "heap" consists of both memory obtained via sbrk() that shows up in the /proc/[PID]/maps file as [heap] and memory obtained via mmap() - see this quesiton. So the "size" of the heap is going to be very hard to determine with certainty.
And the region labelled [stack] in the maps file is the stack for the main thread only. Multithreaded processes will have multiple stacks, one for each thread. And they will show up in the maps file as anonymous memory - maybe. The application can control the memory used for a thread's stack via the use of pthread_attr_setstack() and set it to any memory the application might use.
edited May 23 '17 at 12:00
Community♦
11
answered Oct 19 '16 at 11:36
Andrew HenleAndrew Henle
20.7k31535
On Linux, you can read /proc/[PID]/maps and find [heap] and [stack] entries.
But for the GLIBC heap implementations usually used on Linux, the "heap" consists of both memory obtained via sbrk() that shows up in the /proc/[PID]/maps file as [heap] and memory obtained via mmap() - see this quesiton. So the "size" of the heap is going to be very hard to determine with certainty.
And the region labelled [stack] in the maps file is the stack for the main thread only. Multithreaded processes will have multiple stacks, one for each thread. And they will show up in the maps file as anonymous memory - maybe. The application can control the memory used for a thread's stack via the use of pthread_attr_setstack() and set it to any memory the application might use.
edited May 23 '17 at 12:00
Community♦
11
answered Oct 19 '16 at 11:36
Andrew HenleAndrew Henle
20.7k31535
edited May 23 '17 at 12:00
Community♦
11
edited May 23 '17 at 12:00
Community♦
11
edited May 23 '17 at 12:00
Community♦
11
11
answered Oct 19 '16 at 11:36
Andrew HenleAndrew Henle
20.7k31535
answered Oct 19 '16 at 11:36
Andrew HenleAndrew Henle
20.7k31535
answered Oct 19 '16 at 11:36
Andrew HenleAndrew Henle
20.7k31535
20.7k31535
Aren't there any system call to find out the stack and heap size?
– shim_mang
Oct 19 '16 at 12:46
@shim_mang The "system call"s used here are open(), read() and close() on /proc/PID/maps file.
– Kamil Cuk
Mar 9 at 7:00
add a comment |
Aren't there any system call to find out the stack and heap size?
– shim_mang
Oct 19 '16 at 12:46
@shim_mang The "system call"s used here are open(), read() and close() on /proc/PID/maps file.
– Kamil Cuk
Mar 9 at 7:00
Aren't there any system call to find out the stack and heap size?
– shim_mang
Oct 19 '16 at 12:46
Aren't there any system call to find out the stack and heap size?
– shim_mang
Oct 19 '16 at 12:46
@shim_mang The "system call"s used here are open(), read() and close() on /proc/PID/maps file.
– Kamil Cuk
Mar 9 at 7:00
@shim_mang The "system call"s used here are open(), read() and close() on /proc/PID/maps file.
– Kamil Cuk
Mar 9 at 7:00
add a comment |
You can get in the below file. You should be root user.
/proc/<pid>/maps
answered Oct 19 '16 at 11:37
Vijay S BVijay S B
717617
add a comment |
You can get in the below file. You should be root user.
/proc/<pid>/maps
answered Oct 19 '16 at 11:37
Vijay S BVijay S B
717617
add a comment |
You can get in the below file. You should be root user.
/proc/<pid>/maps
answered Oct 19 '16 at 11:37
Vijay S BVijay S B
717617
You can get in the below file. You should be root user.
/proc/<pid>/maps
answered Oct 19 '16 at 11:37
Vijay S BVijay S B
717617
answered Oct 19 '16 at 11:37
Vijay S BVijay S B
717617
answered Oct 19 '16 at 11:37
Vijay S BVijay S B
717617
answered Oct 19 '16 at 11:37
Vijay S BVijay S B
717617
717617
add a comment |
add a comment |
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